New to progesterone...help

Kaitlyn • Surprise! Baby number three on the way! Twin sisters who are about to both become big sisters!
So I started progesterone 100mg yesterday. I am 3 DPO and I'm feeling exhausted, nauseas at diff times of day (not when I take the med) and my boobs are bigger. 
​All caused my one dose of progesterone?? Anyone else taken this and had the same?