Low progesterone?!

I just got blood drawn today to check my progesterone (won’t get results till Monday) - we are in cycle 18 of TTC with no luck & 1 miscarriage 2 years ago.

I was just wondering how many people suffered from low progesterone & once they were on supplements were able to conceive and carry a pregnancy/child?

Any advice on using progesterone I would appreciate just in case I end up having to take it! Thanks :)

p.s. I’m high risk as is cause my uterus being split (they are sure if it’s a septum or just bicarbonate? uterus) - she’s reviewing my HSG images