Hi I was wondering if someone could help me out see, my girlfriend has had a cyst for some months now and from what her doctors have told her it's pretty big, we've been having sex during her time with the cyst and sometimes even with no protection. About 2 weeks ago while having sex cum came out and we weren't sure if it was mine or hers, I got her a plan b pill but a day late and then her period came but she said her bloods been red. She's taking a pregnancy test tomorrow and has her cyst removal surgery on Friday the day after tomorrow. I was wondering how much of a chance there is that she is actually pregnant and if the surgery can prevent the pregnancy from going any farther