Please help, 5th miscarriage.. 💔

I never ever thought this would be my life, I do have two beautiful boys that I am extremely blessed and lucky to have. But over the last two years my husband and I have been effected by loss after loss, my first loss was in September 2016 and they just kept happening from there May 2017, Feb 2018, May 2018, September 2018.. there has been heartbeats in all that were either too slow and then ended or they were perfect and then just over a week stopped which is what happened with my most recent and the one in Feb. we’ve had test after test done and all cane back normal, my OB doc and my high risk doc have no idea why this keeps happening, I never make it past 7 weeks and I spot brown leading up to the miscarriage. This time around I was put on oral progesterone and baby aspirin and that still didn’t help. What I am asking is anyone else in my same horrible situation or had a positive outcome after so many losses? Or cane anyone think of something else it could be?? I know they say the risk of miscarriage after each one gets higher. Miscarriage is the hardest, craziest emotional roller coaster I have ever been on.