What is this 😕

Okay so I've been waiting on my period for three days and i'm not pregnant but I had sex last night and I bled A LOT nothing was painful about it, it literally looked like my period so I assumed it came on. Like there was so much blood it was almost like the blood from the previous days was stored up then released AFTER the sex But anyways. I've been spotting all day but it's not like bright. It's looks like old blood like really old blood and it's like a little streak every 6-7 hours. But it's basically not even there if you see what i'm saying. So is this my period orrrrrrr ?