AF due 12/12

I've been getting really bad headaches, body temp is high, i normally get hungry right away if I don't eat. But the past couple of day, I haven't able to eat. My boyfriend and I did have sex during my fertile window. Had sex the nov 25-27 on my peak days. I am also a smoker and smoking is making me sick. I get really dizzy and feel like throwing up. I know it's to early to test and I don't want to get my hopes up. Have any of you experienced this before and got a BFP. 🙏🏾🙏🏾🙏🏾😩😩😩