yes, as a matter of fact when you are pregnant... the majority of the women who experience nausea (aka morning sickness) it is due to their progesterone levels. (Oddly, for most it goes away the higher the levels get, I haven't found any studies into why that is exactly)
So perhaps you are either making a LOT of progesterone in your LP (not a bad thing at all!) or you are sensitive to the lower levels of it... which hopefully means when you do get pregnant the morning sickness will go away sooner.
This time around I started feeling it at 5dpo and got all of my signs of implantation on 6dpo... then got my bfp about a week later... so I think my body is sensitive to even the slightest bit more progesterone than I normally make in the LP. (ETA - to finish my story... Ill be only 11 weeks on tuesday and I already feel much better! I had several weeks of not feeling great, a couple weeks of feeling outright bad and then about a week and half of what I would consider severe... almost enough to be put on meds again. then over the past week its really let up)
Artist, photographer, stay-at-home-mom and Marine wife. Mom to 4; a boy and three little girls.