So, I started the pill 3 days ago (maexeni) and I'm not actually safe yet as I took it before my period. Me and my boyfriend had sex without protection and as soon as he pulled out he came. It went over me but I'm worried it went inside me, he said he's sure it didn't but I'm a bit nervous. I'm originally due for my period in a few days but obviously won't get it because I'm on the pill and I have all the period symptoms I normally get but I'm worried I might be pregnant. How would I know?