I have PCOS and endometriosis. I am 23 and my man is 26 he recently told me he finally wanted to have a child. We have been togather for 4 years.... Here's my thing I don't know when I should take a pregnancy test because I don't have regular periods I was on birth control for 6 years and haven't had a period because it was consistent birthcontrol (skip the sugar pills). So should I take one like once a month or what? I don't know what to expect since I may not have the initial sign of hey missed period.