Nauseous or just too much popcorn 😂

Stynna • Married for 7 years-getting ready for the next step! TTC since April 2015!
I went to the movies tonight and had popcorn and soda and on the way home started to feel really nauseous. 
Normally I would attribute it to food, but I definitely BD after a positive opk this month. The app says I have to 10 more days until my cycle but I just feel weird. 
I could be just paranoid but I can't sleep! Any one with me or am I overreacting!?