Bleeding again 5 weeks PP


I stopped bleeding at 2.5 weeks postpartum. I’ve had some cramping on and off, on days that I’ve done more. Taken a walk or done a lot of standing. I started exercising a few days a week and felt okay and then yesterday I worked out and had a lot of pain after and the rest of the day and now I’m bleeding again.

Anyone know if this is related?

I’m exclusively breastfeeding so I don’t think it would be a period. I go to my 6 week check up this Thursday btw.