Oh - I just saw that you were 2 or 3 DPO, too - that is kind of early to test progesterone, too. Progesterone levels peak at 7 DPO, and the numbers they give for "normal" are to be compared with 7 DPO. Usually, you will be able to tell if your number is "normal" if you test from 5 or 6 DPO until 8 or 9 DPO, but they can be low if you test too early or too late. So, if you were at 5.9 at 2 or 3 DPO, you could have been even higher at 7 DPO . . . maybe even high enough to fall within the "normal" range. Your progesterone is definitely a little low for 7 DPO, so increasing your dosage next month is probably not a bad idea.

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