What could it be?

I’ve been feeling very ill for almost 2 weeks now. I went on a trip last weekend and I was so excited to turn up...but I couldn’t stand the smell of alcohol and gagged at every sip. I went out to a bar and almost passed out. My appetite has increased and I’m exhausted. I feel nauseous all the time too. Certain food smells have been too much for me and make me sick to my stomach. Also couldn’t stand the smell of nail polish last night, it was more intense than usual. All of these symptoms have been so alarming. AF is due next week so I want to hold off on a test until then. Has anyone else had similar symptoms before they found out they were expecting?