Brown discharge for a week after period??

So basically to start off,

My normal period is heavy the first two days and then gets lighter until it stops and it lasts 6 days. This time my period was like 7 days AND it was so light! I didnt fill a single pad.

Then after the 7 days was up, brown discharge started coming out. Its been about a week since my period ended and Im still getting brown discharge.

I thought it couldve been spotting cuz it was a little red at first but I took a pregnancy test and it was negative and now the discharge is so brown. Its not even red.

This is definitely not normal...

Also you can see my legs in the photo I was like sitting up. Not a pussy pic.