Symptom spotting 😂

So I know you're more than likely not to be nauseous until like 6-8 weeks along, but has anyone felt it before getting a BFP? I've been having hot cold sweats like MAD and random bouts of nausea. Also, I've always been fine with the smell of cigs(my hubby smokes, hes on a journey to stop) but lately (like my pregnancy with my son) I cannot stand it. I also wasn't able to eat my mcdonalds yesterday cause it made me nauseous to think about eating it and it's my favorite fast food. What do yall think?