They are more precautions. If I'm given Provera and I am PG, then there is a higher risk of birth defects or miscarrage. Although I have yet to find much research on it. Progesterone is to check to see if I O'ed between CD19 when I gave up on the OPKs and now. I'm sure I never did because I had no 2ww symptoms.
And I have to have this done at 7am, before I show up to work at 8. So really just more needles and shitty lab results, nothing out of the ordinary there.