Sensitive to smell and throwing up?

Carine
My boyfriend and I have been ttc since my last period. Unprotected sex for 2 straight weeks.
I've been cramping for a few days now.. Yesterday my boobs hurt and everything I smelled made me nauseous. I didn't eat anything of how gross everything smelled! Today after my workout I took a shower and the smell of the shampoo made me throw up. I have now thrown up 3 times.
Early signs of pregnancy? Could I be having symptoms as little as two weeks pregnant?