Ok I had my period on the 17-21 of September I always have regular periods 5 days long maybe a day late but never early. I had sex multiple times throughout the weeks all unprotected. On the 2nd of October I started bleeding again! Not normal period it's lighter like a light period but more than spotting sometimes brown sometimes bright red and slimy. (Yuck) and it's been going on for 9 days! What's going on.

Hard to say, might be implantation might just be a irregularity. Might be time to see your doctor. You can also wait until a few weeks after your expected period and take a HPT.