Low progesterone but no supplements

My progesterone is low so my doctor had us on

fertility meds

but never put me on progesterone supplements. I’m now 5 weeks and 4 days pregnant (guessing) I’ve had blood work done and she said my progesterone looked good and my hcg tripled but my progesterone was only 11.35. She said that was good but I’m a little worried cause I’m not on anything. Will it continue to rise with pregnancy? Or how does that work? I am nauseous all day every day and my boobs are killing me so symptoms are all there too