recurrent miscarriage help!!!

[Amembair]

I am now 35 years old and have suffered 2 miscarriages in the last 6 months. 1st m/c was at 6 1/2 weeks and required a D&c and the last was a chemical. I have one child who is almost 11 so now 11 years later I am having a problem. So far the testing shows a low progesterone level of 5 at 7dpo. I am going in for an endometrial biopsy 7dpo, which will be in a few weeks. My periods are regular at 26 days and I have no unusual symptoms other than miscarriage. I am scared that something is really wrong. I was wondering if anyone else has gone through this or is because I am beginning to lose hope.