Advice on progesterone

Megan • Trying for our third! First baby a miscarriage, chemical then rainbow. Second baby 9 months of trying 4 with clomid. Hoping for a quick easy pregnancy for #3
Who had been on progesterone? Did you have side effects? What were they? I have had two miscarriages the last a week after my BFP. The doctor is going to put me on progesterone as soon as I get my next BFP and suggested that I wait 2 months, which I don't plan on doing since the miscarriage was so early! But I do plan to take the progesterone and want to know what to expect.