Testing after 2 MC

Has anyone done any testing to see what might be causing their miscarriages after 2 back to back miscarriages? I had one in December and one just last week (end of March). Both were at the 7 week mark... and from my early ultrasounds when I started bleeding looked like they had stopped growing at about 5 1/2 weeks.

I’m conflicted on whether or not I should do the tests.

For tests: I want another baby ASAP so if this can in anyway help that I want to do it. It would be nice to have the potential for answers.

Against tests: there may be no certain answers. I may be able to have a baby again just fine and these were just 2 unfortunate events. The cost and stress of taking the tests.

Any insights or people who have gone through this?