Sex stuff

So June 25th I had my first time sex and it was unprotected sex with my now ex boyfriend (and yes Ik it should have been protected) but anyway I asked him if he had cummed in me at all and he said I don’t think so but he did have his dick in me a lot of the time and he also said he cummed a lot and that makes me worried because we aren’t trying to make a baby but we just had it... and Ik that he popped my cherry bc there was some blood in the aftermath and then 4 days later light bleeding happened but ended somewhat quickly and i mean idk what to do bc I don’t know if I could be pregnant and wouldn’t it be a little early to buy a test? And apparently according to this app it says my period is 2 days late. Update: 3 now