13 day period 🥲

So I had my third baby 15 months ago and have been exclusively breastfeeding. I finally got my period back last month for the first time and that sucker was the heaviest period I think I’ve ever had.. I was pretty sure I was going to need a blood transfusion by day 3 😅 but I ended up being fine and it stopped on day 9… well aunt flow visited me again at the beginning of this month after I had been sick with some virus and was taking it pretty easy on me.. I thought.. the flow was light, no cramps.. and by day 8 I thought I was done… until on day 9 I woke up and it was like a whole new period had started, and now here I am on day 13 of bleeding and the flow is definitely heavier than the first period… still not really cramping and other than being irritated with the fact that I’m still bleeding I feel fine.. 😅 this never happened with my other two babies.. with them I started right back up being regular at 4 months PP.l even thought I breastfed them as well... so I guess I’m wondering if anyone else has experienced this? Could it just be my hormones trying to regulate again? I do have a doctor appointment with my PCP later today and I plan on talking with him about it, maybe you can give insights on what to ask? Thank you in advance! (I’m 28 btw.. so I don’t think it’s perimenopause like my mother in law suggested 🤷🏼‍♀️)