I was told I would have a low chance because I have pcos

I was told I would have a low chance because I have pcos. I was finally put on medication and birth control and after a month and a half of not feeling quite the same... my doctor said it was my side affects of new meds and my pcos... I told her I had all the symptoms and a positive then a negative test at home and she took one and it was a negative and I was told I wasn't pregnant. three weeks later and a test before my period I get a strong positive. my boyfriend and I weren't planning on it but if it is right it will happen.