Low risk sexual experience on november 15. 4th generation test on february 4 non-reactive . oralquick on march 9 and also negative. conclusive ?

Yes.: These tests were performed well beyond the minimum adequate time for antibodies to the HIV virus to form and become detectable by both Orasure/Oraquick and serum testing. So long as you have not had any subsequent activities with risk, you can consider yourself truly negative.

Yes: Negative tests four months after sexual activity are conclusive. By this point a pregnancy would be clinically obvious even if the tests by some weird chance were negative.