Just Curious

My husband and I had unprotected sex on the 17th, 3 days before I started to ovulate. Since Sunday the 24th I have been SO sick. Smells make me nauseous, food, laying down, anything can set it off. It's been 3 days. 
Sunday I laid on the couch and slept all day which is NEVER something that I do. I just felt drained. 
No tenderness in my breasts. Today I am cramping slightly and have a thick milky white discharge. 
I know this is ridiculous but could I be pregnant? I am obsessing. 😓
I know it is WAY too early to tell for sure. My next period is not supposed to start until July 9th. 
I normally do not worry about this but I feel weird.