Instruct: Classify Amazon reviews into positive or negative sentiment
Query: It works.

We had loads of trouble conceiving -- took years to get pg. first time and that was ectopic, which I lost, of course. Another year later and nothing. We bought the monitor and got pg. in 4 months -- now have an 18-month old baby boy and using the monitor to try for our second.This monitor was extremely helpful -- though consistently it shows that I'm not ovulating every 2nd month (eg no 'Peak')... Not sure how accurate that is after reading other reviews of women who got pg. when the monitor only said 'High' and not 'Peak' (aka not ovulating?)Anyway, you can't beat this product if you want to remove the guesswork. Yah, it's expensive. But it takes away the wondering, supposing, guessing, anxiety and uncertainty that can be TTC. For me, removing some of these unknowns was more than worth the money.