Pregnancy scare ??

My boyfriend and i have always used condoms when having sex and im on birth control( i do take antidepressants that im not sure if they cancel out my birth control) but there were two different times where the condom broke or slipped off. And i cant go by if i miss a period bc ever since i switched birth control methods in the middle of my cycle my period hasnt been normal. I told a test and it came back negative but im nervous that it was to early for it to be accurate. I’ve been having pelvis pain and feeling nauseous like all the time. What should i do??