Just got news I miscarried

I am 10+1 weeks, but miscarried at 7+5 weeks. My first Mc was Dec 2016, at 8+5 weeks. Second d&c scheduled for Saturday. Any other mamas go through multiple miscarriages? Anything I should discuss with my doctor to WHY? Especially after a super healthy first pregnancy. I’m SO distraught right now it’s almost unbearable. Did you go on to a healthy pregnancy?