Hi Rhaynes, i had the same questions before and was told at my clinic that my prog. level shld. be at least 25 or higher and 250 or above for estradiol. Dont worry, however, coz i think these levels were set after one had the transfer done. You're still being stimulated so I guess your clinic will adjust your meds.
We're of the same age but unlike you, I never had children. DH has male factor, 4 failed iuis; had 2 ivfs w icsi last aug. & oct., 23 retrieved eggs, 15 fertilized, 3 fresh embies and 4 frosties were put back but no luck. Still weighing my options but might go for my 3rd shot next yr. I think you have a better chance. God bless you.