Ever heard of someone’s immune system killing the embryo??!

So I’ve had two failed frozen embryo transfer.

I’ve just seen my gynaecologist and he informed me that my body might be attacking the embryo and therefore is causing me not to get pregnant.

I am very disheartened and saddened by this news. He also informed me that perhaps I should now do a natural cycle rather than a medicated cycle( use of progesterone & estrogen) to see if this works.

I don’t understand why he would say to do natural if my body will still be attacking the embryo.

Iam very confused at this point and I don’t know what to do. We have spent so much time and money in to this for these doctors to tell me now that my body ‘’might be attacking the embryo’.

I thought the problem I had was with the medication as I still cramping and bleeding😭😭

Any advise words of encouragement would be appreciated ladies