Question regarding progesterone level and blood test for progesterone?

Question

Does it make a big difference if progesterone test was done on DPO 9 rather than DPO 7? (I had it done today on CD 21 and realized that it could be DPO 9 for me since I may have ovulated 2 days earlier than expected. Fertility friend miscalculated my ovulation day)

Also, is it normal to feel tender b*****s beginning on DPO 8? I recall feeling tender b*****s around DPO 8-10 in previous cycles, but did not achieve pregnancy. Do women experience tender b*****s because the progesterone level starts to decline after DPO 7?

Answer 1

It really doesn't matter what day the test is done as long as it is after ovulation. It is only to confirm that you ovulated.

Tender b*****s are common after ovulation due to progesterone levels.