What's going on?

I was fertile oct 10-17. I ovulated oct.15 and had unprotected sex oct.13. On oct 15 I started lightly bleeding and i stopped a tiny bit on oct.16. Everything went back normal. On oct.23 I randomly started bleeding like I was on my period then it stopped. Oct.24th nothing. Oct.25 I show blood again now I've been having non-stop brown discharge and my period was suppose to start today and I'm still having brown discharge mixed with blood streaks.