Worried that I might be pregnant I had light brownish discharge?

I'm 17 and I spent the night at my boyfriends house around June 10 and my stupid ass didnt think an we had sex like at 4 in the morning. Before you judge me I know we weren't thinking and he came inside of me. According to the app my period was suppose to come on June 24 and it didn't. I have a question about this light brown discharge that I had last week for I think 3 or 4 days and then it never got any heavier. I'm scared but I'm trying to keep calm and not stress so hard about it I'm having no pregnancy symptoms so that's a good thing right? If my period doesn't show up I'm just going to give it a few more days then I will test please don't be rude