TMI discharge

The last week or 2 I’ve been having crazy discharge. Just tons of it every time I wipe, darker than usual or even brown strings or clumps of hard stuff come out. It’s very thick & not sticky or stringy. It happened the week leading up to my period & now the week almost 2 after. I just had my yearly a month ago & everything came back good. I’ve been on the patch since March & never had this issue. Any clue?