Multiple chemical pregnancies what do I do?

I’ve had 4 chemical pregnancies all at about 5 weeks every time it’s the same thing.

My cycles are normally 28-32 days long My last cycle (ended in chemical pregnancy) was 42 days long and I ovulated on CD25 instead of CD14-15 like normal. My luteal phase is a normal length I think

I’m going to find a new OBGYN because the one I went to last didn’t seem concerned at all, didn’t want to run any tests, and just said sorry pretty much.

For any of you ladies who’ve had multiple chemical pregnancies what type of tests did you go through, and what was your verdict if they found a possible reason, and were you able to have a healthy pregnancy with treatment?

The only thing that we KNOW that’s an issue concerning pregnancy is I’m RH- but I dontthink that really effects early pregnancy. Anyway I would appreciate any advice you can give I’m at my wits end 😔