Need urgent advice.

My hcg levels have been doubling (from 82 to 222 in 48 hours) but my progesterone level is declining. From 13.2 to 9. I asked if I needed to go on progesterone and he said it was up to me. I asked for the prescription. Should I take it? Are my progesterone levels really bad? Anyone have a dip and then rise again? Please advise me....