Anyone over weight and miscarried?

I am 200+ pounds with BMI of 33. I never lost my pregnancy weight from my son who is now 13+ months. I had a misscarriage last month at 4+2 and it was my first ( 🙏 hopefully last). I'm worried my weight is the cause although my doctor said no, "not likely". I am waiting 1 cycle before trying again b/c we want to have our babies close together but I'm frightened it will happen again. Anyone else worried about the same or knows if it is the cause?