Ivf 2 week wait period cramps 5 days

Im going crazy during the 2ww after my day 3 embryo transfer. I've had period cramps starting 5 days after transfer. Dont know if its a good thing, or the progesterone or AF gearing up? Anyone go through <a href="https://glowing.com/glow-fertility-program">IVF</a> with the same issues? My beta is 2/1 and so far no period. I need some guidance!