Ok, look, I am going to say this in the simplest way possible and I want you to read it and do it... don't ask questions... just do it. Here it goes...
CONTINUE TAKING THE BIRTH CONTROL!!!!!!!!!!!!!!!!!!
Was that clear? I think it was. Why do you think you are preggo? Have you taken antibiotics? Did you miss a few days of taking the pill? Have you not been using condoms?
I'm on the pill too and I still make my man use a condom EVERYTIME! Having a baby is nothing to play around with.
If you are on the pill and taking it like you should, there should be nothing to worry about. Besides, there are no "symptoms" of being preggo besides missing your period. Nausea and breast tenderness don't happen until 6 weeks to the end of the first trimester if at all. Sometimes just being on the pill makes you feel crappy.
Just stay on the pill and wait for your period. Suddenly stopping the pill will really mess up your body. If it is really bothing you, just take the week of "period pills." You know, that week out of the pill pack where you have your period... just take those early to get your period early.
If you get your period, you are fine. If you don't, go to the doctor.
Also, just from reading your post from this board, I think you need to make an appointment with your doctor anyway so he/she can sit you down and explain birth control, sex, and pregnancy to you. No offense, but you sound really uneducated about it and probably shouldn't be having sex until you feel more comfortable knowing more about it.
I was the same way. I stopped having sex, asked my doctor to explain everything I needed to know, did my own research, and now I am confident and TRUST taking the pill.
Good luck