Multiple Losses

Hello everyone! My husband and I have two beautiful little girls (our oldest is 4 and our youngest is 19 months), but we have also had 3 early miscarriages, one before our oldest daughter was born and then two of them back to back this year. I went to my OB last week and they ran several tests (thyroid panel, prolactin analysis, and antiphospholipid syndrome). All of the tests have come back normal.

We would love to have a third baby and have been devastated by our losses. Are there any other tests I should ask about? I just don’t really know where to go from here. Thank you!