Getting birth control, but scared that I’m pregnant

Okay yalll so I’ve been sexually active since May of this year. And every time I’ve had sex since then I’ve been unprotected. Meaning no birth control and he didn’t wear a condom. He came but not inside of me and not anywhere near me( I believe). Anyways I’m supposed to be getting birth control tomorrow and I have to be tested for pregnancy in order to get it. I do not feel pregnant at all, I do not have any symptoms of pregnancy but what scares me the most is that I have not had my period yet this month. But according to the eve app I’m supposed to get it in 3 days. But my periods are very irregular. I should also add that the person I have been sexually active with claims that he is absolutely sure that he did not come in me or near my area. What should I do in this situation. I need an answer ASAP!!