Random question.

So, I haven’t posted in a while. I was diagnosed with PCOS so I am on birth control pills. I am about to hit the period part of the first month. I am wanting to know should I take ovulation tests still.? My periods are super irregular like my last two were July 2017 and may 2018. I have two friends who have gotten pregnant on the pill so I know it’s possible, we are going on 4 years TTC with 1 misscarage. I have been cramping really bad ( but hey I am about to hit the period part in about 5 days ) I am just wanting some advice and tips. Please and thank you. ❤️❤️