B.C.
You've repeated questions about thyroid levels, thyroid antibodies, hgc and progesterone being low, etc. Repeating questions a lot is kind of spammy.
Although there may be doctors on this site, they do not have access to your particular test results, health history or that of your husband.
If you've had 3 miscarriages, you might have an Rh factor thing going on if your husband has a different blood type than you. Your immune system would be involved, but there are ways to treat that now.
I really think you should be talking to an endocrinologist or a fertility specialist or if you are still dealing with grief from 3 prior miscarriages, some grief therapy might be in order. If you are currently pregnant and this worried, the worry is not good for your pregnancy.
No one here is going to be able to give you the answers that will really be able to help you. Please seek some professional help.