most affordable form of progesterone?

I normally take Crinone 8% progesterone gel for my 1st trimester due to severely low progesterone. The price has gone up alot and it was expensive to begin with and i simply cannot afford it hence why i cant TTC and it's REALLY upsetting me I heard that progesterone shots, as harsh as they are they are way cheaper- someone online told me $20 for a 2 week supply which i find hard to believe. Does anyone know the out of pocket costs for progesterone shots? Would i be able to get that from a normal Ob/gyn or Reprod. Endo. ? Anyone aware of any other progesterone treatments? Ughhh, i just cant take having a empty womb knowing it's not suppose to be. It's not about replacing Tristan but i would like to be pregnant by her due date ( late August) , i feel like it will help my healing to have new life to look forward to rather then keep wallowing in depression over her death. My husband wont even consider TTC until i have progesterone lined up because it is the #1 stress in pregnancy for us. HELP!