Overreacting?

Marlene
So my doctor gave me prenatal pills for me to start taking. Im not sure if this is true or not, but I've read that when you start taking the pills it starts to make you feel symptoms l, such as feeling nauseous. I'm 10 weeks pregnant and have not gotten any big symptoms yet. 
My SO says I'm just overreacting and scared. Ugh idk maybe I am. 
Any tips?