Pregnancy symptom a day later?

I don’t even know what to think... ive never thought about pregnancy before HoWEVEr something crazy just happened. Last night my husband cummed in me for the first time. I felt fine all day today until I had my daily iced mocha latte which I have every single day just fine. Soon after I drank it I felt SO nauseous and queasy... just felt like throwing up! This is unusual for me. Can this be a symptom that I got pregnant last night? Or am I just thinking too much?