girlfriend could be pregnant

what do you want us to tell you? i mean we cant say "yes" shes pregnant or "no" she isn't..if you had sex theres always that chance..she needs to test definitely..then once you guys find out you can make the decision about where to go from there

she took the test and it was negative
but she hasnt had her period since//
can getting off bc affect her period
im not really sure on that subject

you should tell her to make an appointment with her doctor to figure out why she has not had a period.
it could be because she got off the pill.

now she tells me shes been having a white discharge for a while before i dated her
i think its a yeast infection but she not irritated..

She needs to book an appointment with her doctor.

Um yes she definitely needs to go to the Dr. no one can be diagnosed without being seen. The fact that she's late could very well be b/c she stopped taking the pill. That is so very VERY common when switching/stopping/starting the pill. She really needs to go to the Dr. She should have done so before having sex with you if she felt there was a problem before-hand.

Oh and here it is nearly 2 months later since she took the test (just checked out your dates) it's time for another pregnancy test. If she is pregnant, the pregnancy hormone would almost definitely show up on the test.