I had a M/C in June of last year. I went in for a CD 21 check up on my Sept cycle and never went back for the results they called me before my october Cycle started and told me that I needed to come in so I went back in and they told me that I was ovulationg but not a mature egg and that is where my problem was coming from. So he gave me clomid my Progesterone the months before I went on Clomid was 7.9 the month I was on Clomid was 34.9 so they told me that I had had a great ovulation that month. That ended up being the month that I got my BFP.
I don't agree with your DR because if I had kept trying then I don't think that I ever would have got my BFP. I know how much it cost to go to another DR but if he will not do anything then I really would think about going to another OB for another opinion.
I hope that helps
I am so sorry to hear about your m/c my heart breaks for you I know how bad it hurts.