I had a missed period for 7mths and was diagnosed with pcos. Due to a heart condition I cannot take birth control such as the pill to regulate my periods. Therefore, the doctor just prescribed the pills that come with birth control but only cause the period. So I got my period that month, although not that normal. Due to taking the pills the month before I got my period the next month and it was more a normal period. A few after that period, I had unprotected sex and took the plan b pill right after. Is my chance of pregnancy high?