Progesterone injections?

Because my first child was born premature I need to have progesterone injections to maintain a healthy pregnancy. With my second pregnancy I was able to easily get the injections from a local compounding pharmacy for only $600 total. With this pregnancy I'm having trouble finding any pharmacy able to compound them, which means I will have to pay a $730 per month copay to get the Makena name brand. Sounds like the drug company may be making it hard for anyone to get the materials to compound the shots. Grrrrrr! 😡 Does anyone know of a compounding pharmacy in CA or NV that can still make them??? My doctor and I are searching but can't seem to find one!