D&C ...

Ok so in June I had my first miscarriage (supposed to be 8 weeks but only had a 4 week gest. sac, went back a week later and no progress) I had that one natural which was not fun. I got pregnant again in August , went in for my 7 week US and again I was only measuring 5w, went back a week later and it had grown but not as much as it should have (and it was still empty) but my doctor won't do anything until I go one more time (I go back thursday) and we make certain this is another miscarriage.. the sac is still empty once again. (I have no living children) .. I wanted to see if anyone on here has had a similar thing happen more than once and then have a healthy pregnancy? Also I wanted to see what everyone experienced with a D&C since I've never had one. Thanks so much ladies xoxo