How many of you ang hindi regular ang menstruation before and even after having a baby ?

I also have PCOS since Im 13 years old, Im 30 now and currently 22 weeks preggy. I took care of the OB then I tried diet and exercise (it's really just discipline and determination) then my periods became regular, so maybe what I did before to get pregnant was a big help. Then hubby and I used the withdrawal method, we just tried because he knows my condition and we are blessed to have a baby girl.