35, 2 recurrent Miscarriages, No live births

I'm struggling. In July '18 I had a miscarriage at 6 weeks after seeing and hearing a strong heartbeat just a week prior. I had a blood clot in the uterus that the doctor thought I would pass without harming the baby... didnt happen.

Now, at 10 weeks, I'm having another miscarriage after seeing a strong heartbeat at 7 weeks 1 day. Measured perfect at the 7 week appt. They did say they saw 2 tiny spots of blood on the baby at that ultrasound. My HCG & progesterone were great.

Neither me nor my husband have any children. 1 miscarriage July 18. 1 miscarriage April 19.

I'm 35 years old and beginning to get worried. Anyone have this happen and go on to have a healthy pregnancy? What about testing? The midwife told me they cant test for anything which I dont believe. What if the problem is me? Wouldnt they do specific testing on the mother?