My progesterone dipped by like maybe 6 numbers or so, so obviously not by much.... (in my triplet pregnancy) though it was in the 70s and Dr.B said it was normal. I was already on 2cc of PIO. - oh and progesterone was unrelated to anything that happened later on!!!!
these were very similar to my betas - i was 197 at 13dpo and 479 at 15dpo.. both of my embies implanted (although only one ended up a baby). how many did you put back?
We're getting there. I am still waiting for it to sink in. 
