I doubt that you are pregnant, but there is a chance...Guys precum and they can't feel it and it usually happens pretty quickly after stimulation or when they are aroused...The precum carries sperm, hence the pull out method is bad.

If you use the first responce test, I know you can test up to 4 days before your period and it's pretty accurate, it's how I tested and it came out pink but then I did it wrong (and I may have cause the line ran...I think I held it the wrong way- but it was still pink) so I waited till my missed period and took it early that morning and it said positive. So I swear by those.

Good luck! And if your really nervous, you should think about going to a family planning clinic or your doctor and getting on birth control and maybe asking him not to go into you before putting on a condom.