I'm sorry I haven't experienced anything like this but I really do think you should take a trip to your GP especially as you have had a miscarriage. Everything will probably be fine but it's always best to get checked out.
In sorry for your loss and I do hope you get your DC very soon xx
What did you find out from this? I'm on my 3rs cycle right now and am having the same problem we miscarried back in November and I had to have 2 d&cs after the first one I almost bled to death on the way to he hospital and had to have an emergency d&c on the 2nd of December