Help! Is taking natural progesterone cream safe without dr advice?

I woke up with a migraine today, something I typically only get when my period starts and my progesterone levels drop. after a mmc I am 5 weeks and worry about losing my little bean. I have some natural progesterone cream on hand I got from amazon but am afraid to try it with out dr approval... however won't see dr for another 4 weeks and may be too late by then. My temp is staying at 98.3, cm is currently ew (signs of healthy progesterone levels), I'm constantly fatigued and have breast soreness that has been constant and now have a migraine (signs of possible low progesterone levels) as you can see symptoms are inconsistant. I did not bleed or have sognificant pains with my last mmc. but I did have a migraine about 1 week before baby stopped growing what would you do?