Low progesterone?


I went for my ultrasound on the 8th, I measured at 5 weeks and they could see the yolk sac inside the gestational sac. They ran blood work on me and said my HCG levels were perfectly fine, but my progesterone was a little low( i was at 14 and she said wanted me around 17) so they are giving me a Rx. I dont have any spotting, slight cramping every once in awhile ( I had that with my first pregnancy too though) I’m still nauseated and my boobs feel like they’re going to explode! Guess I’m just looking for some positive vibes and anyone else who’s gone through this? It seems like things will be ok, but I cant help but freak and stress over it.