What percent of women who think they are ovulating are?

Well I know that about 20% of women 25 and older get pregnant when trying to get pregnant, and when theyre not on Birth Control. And you can only get pregnant if your ovulating and a sperms there, so maybe it's 20%.

Also, when your ovulating there are signs such as a thick white discharge, abdominal cramps similar to menstrual cramps, and also you get really horny.