First time letting boyfriend finish in me

So I’m on the pill and I have been for 5 months now. I’ve been taking it every day around 8-9am. Last weekend I let my boyfriend cum in me. Idk if it’s in my head but I’m really freaking out over if I’m pregnant or not? According to the period tracker I’ll be starting my period in two days! We had sex on Friday. I’m just irritated because I’ve been feeling nauseous today, I’ve been cramping, and I’ve had to poop and these are similar signs to pms so I feel like I’m going crazy 🙃 I’ve also been really emotional too since last weekend so maybe I’m just pms’ing after all. Is it too early to take a test if I’m starting my period in two days? Should I wait?