Feeling defeated

Cindy • My DH and I have 1 child together and have 4 all together. I have 3 from a previous marriage. We are currently trying for our last baby. We've been married since 05/14/16 and together since 02/10
I finished my 2nd round of Clomid in November. Had my progesterone levels checked yesterday and it wad at 9.6 which means I did not ovulate. Now we wait to see if af comes on her own or if I need to take provera. Have to wait til cycle day 32 to take a pregnancy test, if neg and af hasn't come I'll start provera and then 100 mg of clomid cycle day 3 through 7. I have 4 children, 3 from my 1st marriage and 1 from my husband now. He doesn't have any issues, just me. At 31 yrs old I'm no longer ovulating properly. I just broke down today when I got the news. It just doesn't make any sense to me at all!