Big progesterone drop

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Hi! Has anyone experienced a significant progesterone drop and gone on to have a success pregnancy? I was put on supplements but worried a miscarriage is inevitable. I had a chemical last month.

2/27 - HCG 43, Prog 22.1

3/2 - HCG 135, Prog 29.7

3/6 - HCG 744, Prog 8.7