Progesterone question

Who here is taking progesterone suppositories to help with pregnancy sticking? I was told to take it after I got a positive pregnancy test, but I researched and some women said they were told to take right after ovulation. I chose to do the latter as I had two chemicals within a day or two of a positive test... anyway now I’m wondering if I’m feeling pregnancy symptoms or progesterone side effects and confusing them for pregnancy symptoms?!? 10DPO and still getting negatives, but feel nauseous , tired, sore boobs. AF is due Thursday... but I know progesterone stops it from coming. Don’t know if I should stop taking it or keep going a few more days?! Anyone have any input?