... approximately on the 14th, I took plan b the same night. My period from plan b came on the 24th. My period lasted 5 days and ended on the 28th. I had unprotected sex on the 31st. Its been 10 days days since my boyfriend came inside of me. I KNOW you can get pregnant any time. But how high are my chances of being pregnant? I wouldnt know when I would ovulate if I had two periods in one month(caused my plan b)