I’m stupid!

So recently my boyfriend and I have been doing the nasty. And recently we didn’t do it with the condom because we’ve done it before and i’ve ALWAYS got my period. I don’t know what precum is but I was really, really hesitant that he did. He kept reassuring me that it wasn’t and saying that he knew it wasn’t because it was his body. I am 4-5 days late on period. Which it is typical for me to be late but not 5 days. And now I am scared shitless. And definitely will own up to my mistake. And the moment I get my period you bet your ass that I will never do that again. Ugh I hate overthinking and anxiety!