Coral,

My progesterone dropped too (50, 40, 35 roughly were my numbers), but after research, I found that it is variable throughout the day, and can vary on if you've eaten recently of not!

I was put on pessaries (once a day) because I was heading overseas and couldn't get a 4th BT done to check out the levels again. More of a precaution.

But I'm 9 weeks now, and everything has been just fine. Except the constant hunger! But no spotting at all.

Fingers crossed that you just had a late snack & that caused a drop.