Hi ladies I’m having a hard time figuring out what’s going on this cycle!

So I started having brown discharge on May 29th, I figured my period was about to start but it never came, it just stayed brown. On June 3rd I had very light pink spotting brown discharge, not enough to use a panty liner or tampon. Today is June 7th and I’m still experiencing brown/pink discharge and very mild cramping. Has this ever happened to anyone? I’ve taken a few pregnancy tests and I’m 100% sure that we didn’t conceive this month.

Any help would be greatly appreciated!