Should I be worried?

Aaliyah

Hey! Me and my boyfriend had unprotected sex on the fourth and he finished in me, I was also on the first day of my ovulation. I’m on birth control and rarely miss a pill. I also popped a plan B a hour after just incase. My period is supposed to come on the 23rd. I’ve been having diarrhea and I’ve felt a little nauseous today. Any opinions?