Hi,
I have a question and I would love some reply's. My BF and I have unprotected sex a lot. He never cums inside of me mainly on my stomach but sometimes on my vagina. Lately I have been having abdominal cramps and my boobs are slightly tender they kind of hurt off and on. I have also been very nauseated mainly after I eat and I sometimes get the feeling like I might throw up also. I have never had cramps like this until around me period. About three months ago I stopped talking Birth Control and my periods have been kind of jumpy. On Fed my period was on the 12 and in March the 18. DO you think I'm pregnant or am I worried about nothing?

I think that you need to get an at home pregnancy test. Before a man ejaculates, there is a small amount of sperm that comes from the penis. This presumably being to facilitate entry into the vagina. This pre-ejaculation sperm could have gone into your vagina.

So, even though he is not ejaculating inside of you it does not mean that there has not been any sperm inside your vagina.