Progesterone for infertility

Samantha
Had a doc appointment today because DH and I have been TTC #2 for over a year. 
My doc is very concerned about my fertility because of my cycle length and some factors from my DS's birth. 
She told me she wants to try Progesterone before she puts me on Clomid. If progesterone doesn't work, we'll move to Clomid and she said if that doesn't work we'll cross that bridge when we get there. 
Honestly hearing how concerned she was just made me feel like my body is failing me. I feel like I can't talk to any of my friends about it, I don't want to post it in any of my "mommy support groups" on FB because there are people I know personally outside of FB in them. I'm just lost. 
My mom had tons of issues with secondary infertility and she shared some of her experience with me, but I know things are done a little differently now too. 
So my questions is have any of you guys had any luck with Progesterone?? What was your experience like?