I need advice lol

Wednesday night the 1st I had no flow but pink and brown so I figured it was the start of my period Thursday 2ndI bled but not not like a usual first day no cramps just minor but they're on and off Friday the 3rd spotting no flow light when I wipe I see light pink Saturday the 4th a streak of spots no flow only see pink when I wipe same Sunday 5th but still no flow like a normal period or cramps Monday 6th barely seen any pink I had to stick tissue up to see it should I don't know which date to say was my start day for my period im usually regular and I don't ever have a period like this was this Evn my period I took a pregnancy test Friday the tenth it was beg was it too early my first pregnancy I took a pregnancy test Jan 25 and it came out negative then 13 days later found out I was 8 weeks I have been having unprotected sex for 5 months I'm tired all the time it just happened over night now I can sleep all night wake up like I never slept just tired I could take a nap and still be tired is it stress my friends say I'm in denial about pregnancy but it has to be something different if the pregnancy test said negative