no need to be worried hun .. everything is normal. you can't have a real period if you didn't ovulate.. so maybe it was just estrogen withdrawal?
I had my dnc, then ovulated about 19 days later, had my first AF 14 days after ovulation was heavier than usual, lasted about 5 days but no clots or anything.
if you did not ovulate last cycle, I think your next period will be much heavier/clottier that usual because the lining hasn't been shed completely since your m/c. but thats just my guess! you can ask your doctor to prescribe you bcps to re-regulate your cycles if you wanted to - my doctor offered it to me, but I turned it down cause I wanted to see what happens, having a 33 day cycle at the moment (instead of my 30days) with a perfectly normal 14 day LP, so I am not too worried, yet...