Need help & reassurance

2 weeks ago a day after my period I gave my boyfriend a bj & hj he did not cum or pre cum. But minutes after he ate me out he said I came so I touched my vagina I fingered myself. If he didn't cum then I have 0% chance of pregnany right? This happened a day after my period on March 19. I ovulated on March 28. If that helps. I get my period in 10 days. I don't feel different or pregnant. Just stressed.