is it possible?

I'm suppose to start in 4 days..I'm completely turned off by sweets this week I'm suppose to be dealing with irrational mood swings and craving chocolate but instead I get nauseous smelling it. Started getting sick Friday because of certain smells my SO can't touch my boobs can't even breath on them when we cuddle. I'm trying to hold off on testing it's still early and with my oldest I had 2 false negatives before a positive didn't find out until I was 11 weeks missed almost the entire first trimester lol. Fingers crossed I get a BFP SO is really excited he's the one who suggested I might be pregnant!