How do we know if we need a certain hormone

Kachelle

I had a early loss at 7 weeks last month.

It was my 5th pregnancy and the only one I lost I am older now (35) that is the only and main difference than my earlier pregnancies.

I wonder if it was me i see posts about progresterone

How would I know if that was it and I may need that if I get pregnant again

So scared to get pregnant and lose another one because of something I could prevent

My doctor didn’t look into anything after my loss.