Weird period after miscarriage

I have two sons, 9 & 1 but on on April 20th of this year I had my first miscarriage, I was 8 weeks, then almost immediately got pregnant again and then miscarried again but at 6 weeks on June 10th. I am currently having my first period since both pregnancies and it's very weird, I have never had an irregular period. They have always been on time and I know my period to a T. They use to be extremely painful before my second son, after I gave birth to him the stayed the same except the cramps, they weren't nearly as painful. And that's how it's been this time around except that I've only been bleeding so far for 3 days, and not to get TMI but I'm already experiencing brown discharge which doesn't happen till the 6th day of my period (unfortunately I bleed for 7 days 😣) is this normal, has anyone else experienced something like this or do I need to go be seen?