Extremely heavy 1st period after D&C, does anyone know if this is normal?

I had a D&C; done little over a month ago. Doctor said I’d get my period 4-6 weeks after the procedure. I just got it today, I don’t get to see my doctor till next week. Cramps are mild but the flow is extremely heavy and my flows are usually light. Is this normal?

Ps- D&C; is a procedure to clean out your uterus after you have a miscarriage or a missed miscarriage for those who don’t know.