6weeks and 5 days pp

I had a c section-

I bled for the first week and it began to turn pink, ever since the thirdish week I’ve been having brown discharge, at 5.5 weeks I started my period and it ended on Wednesday and I bled a tiny amount on Thursday after walking a mile, since Thursday’s I’ve been on and off with brown discharge after being active(walking) I know it’s old blood and lochia but when does that usually stop? I swear I’m getting a diaper rash before my daughter does🤦🏻‍♀️ please help!!!