why do few females dont start their menstru even after they cross their 20s?
825470
Must see a doctor.\n\nTips: \n\nCycle does not start if they do not have enough Fat tissue. Must put on fat just not weight.  Female body builder may not menstruate.\n\nMay not have Ovaries, birth defect.\n\nMay have ovaries but does not produce eggs, temporary or permanent condition. Same pills as birth control pills in small dose may help, must be supervised by a doctor.
908795
I think it is a mindset.  A mature woman knows who she is and is comfortable with herself.  She does not have to do anything to prove herself, or try to be someone she is not.  In fact, she doesn't have to try at all.  Growing up as a woman comes naturally.  \n\nJust relax, and enjoy wherever you are in life.  Young people want to be older and older people want to be younger.  The best thing you can do is not focus on your age at all.  Instead focus on living your life the best way you can.
64822
depends on the girl.  for some girls they feel good b/c they r maturing.  but some don't like it.  i know i did not like having my period since i had it young and was the only 1 in my 5th grade class.  some girls don't want 2 get older b/c they still want 2 b a little girl but mostly now i guess they feel better since most girls seem in such a rush to grow up.  i mean im only 16 and it wasn't so long ago i was a little girl and i c a way diffrence between little girls now then girls back when i was.  but once they get 2 their teen years they feel more comftable w/themselves.  but for some it's hard but it's easy when other girls go through with it 2.  b/c they don't feel as odd.
1117026
It varies, but most women in their 50s.\n\nYou can be in perimenopause in your 40s, but you usually don't completely stop until the 50s. It also depends on how young you were when you got your period.
672442
It has nothing to do with your period. I assume you are still young. At your age your period will not be completely regular yet. For a lot of woman their period will never be completely regular. Don't worry about it.
954636
See when other females in your family started their menses, this will give you a clue when you would probably start yours.\n\nBoys and girls now experience puberty at younger ages than previous generations. In general, girls enter puberty between ages 8 and 13 and reach menarche (first menstruation) several years later, while boys enter puberty between ages 9 and 14. The reasons for earlier menarche in girls are not well understood.
1123679
Some women do start menopause at this age, and you could have symptoms for years. BUT do not be discouraged, you should go to your gyn with any questions, that's what they are there for.  For reference though...these are signs of menopause. \n\nabsence of menstruation for one year \nhot flashes \nnight sweats \nmood swings \nanxiety \npalpitations \ndepression \ninsomnia \nvaginal dryness \n\nhope this helps you..and really go see your gyn :)
1072352
Sounds like you have not finished going through puberty yet, and it will take time to develop.  Some women do not finish until age 19 or later.  I would not worry about gaining weight if it does not come naturally.
752939
No one can tell you that.  We are all individuals!  Some girls start early, some take longer.  You are still young enough not to worry about it, just enjoy not having that to coipe with every month, its not fun!
255559
I believe you can actually start menopause as early as your late twenties, so at 43 its a definitely possibility.  Did you breastfeed?  That will delay your period.  But with the hot flashes it sounds like menopause.  Go to Amazon.com and look up books on the subject, check the reviews and read up on it.  Then talk to you GYN. My doctor has a link with some info see below.
1024554
Some do some don't it depends on the individual. me i perfer older guys, and so do most my mates. the thing is everyone knows women muture alot quicker then men. lets say the female is bout 22, then usually a guy around 25, 26 would be at the same muturity level.\n\nI'm not trying to put you guys down but its true.
673236
you're fine! Its normal for periods to get all out of whack at your age. I'm 20 and it still happens to me.
809881
This is probably really normal. As others have asked, it could be a determinant of your age. If you feel stressed or anxious about this, then see a doctor you trust for reassurance. Various activities in life can affect your period, such as vigorous sporting or atheletic activities, and stress.\n\nTo give you my story, I started by period at the age of 14 and it was NEVER predictable or normal. I went on the pill at 18, simply because after 4 years, I still did not have a regular pattern. When I was 22, I stopped having periods for 9 months, yet there was no possibility of pregnancy. After a series of tests, it was finally determined that this was normal for me. I am now 30, and my period is still only regulated by taking the pill. While this is not 'normal' in the big scale of things, it is normal for me.
64119
As a teenager I can tell you that everyone starts at thier own time. I started when I was 7..wow right but then I have a friend that just started and she is 18. There was nothing wrong with her womb or uterus or anything she just started real late.\n\nYes you can see a doctor but most of them will tell you "Don't rush IT"
1050771
When you figure this one out let me know. It must be very difficult for boys to become men. \n\nI think that menstruation just signals a woman's ability to bear young. You know, sexual maturity. With women, it can be quite a while later before breast development is complete so I wouldn't say that the period is the end, it is only the beginning. For men I imagine that happens when they begin to ejaculate, they experience voice changes and their bodies begin to grow hair in the special places. \n\nBesides that, it could be many years later that a person reaches full maturity. I mean if you think about it, these changes occur in the adolescent stage of development. While a person's body may appear adult-like, the mental level of maturity often remains child-like. For a multitude of people, it may never change...
29830
Yeah Im a 28 year old male who knows this will happen to my wife when shes late 30s or early 40s and shell have hot flashes and wont be fun to be around and ill need to take her to a doctor to get medicine and show her i love her and support her and try and make it nice.\n\nPhysically she won't have her menstual cycle when its done.
657097
It is very normal. your period will not be consistant until you mid to late 20's. It takes your body time to get used to the fact that it is able to reproduce. It is so normal. Every womans periods are screwed up for the first 5-10 years that they have it. It's alright don't worry about it sweetie