We had unprotected sex on Friday (today is Monday) I'm on the pill regularly and we had unprotected sex and he pulled out. But I think that it may have gotten around my vagina a little and I thought I felt a little go in as he was pulling out, not sure. But, on Saturday I went to his house all day and I missed my pill because I forgot to bring it with and I live 20 mins away. Today, I woke up with sharp pinching cramps. They weren't like my usual cramps. I'm not suppose to get my period for 2 weeks and I'm bleeding down there right now. I don't think it's because I missed my pill, because I usually only bleed when I miss 2 pills. Could I be pregnant? Could this be implantation bleeding and cramps already?