EARLY signs?!

Beanie

My fiancé and I had sex twice during my fertile window, which was only a few days ago, about 5 days now. I’m having sore breast, SLIGHT nausea, headaches and I keep spitting up in my mouth. I’ve been cramping for the past 3 days or more.. is it too early to have symptoms? Please help. I have never had been pregnant before, and I’d like some input before I test.