I lost my right ovary in March from an having an ovarian tumor, I am currently on the pill and my boyfriend uses condoms. However sometimes we fool around a little before he puts a condom on. My question is...what are the odds that I could still get pregnant considering my situation? What if he pre-ejaculates beforehand and doesn't tell me? I don't always take my pill the same time every night. Is it still effective? Plus my period is a day late, so I'm a little paranoid.