Random question. Tmi also.

Not sure if this would be the place to ask, but I had a faint line a few days ago, then I got my period early by 4 days, and it only lasted 3 days. My periods are usually 6-7 days. It has barely heavy bleeding the whole time, but it was dark red. I know it could have been just a weird cycle, but is it possible that I could still be pregnant or am I out this month completely? Thank you in advance!