How did it feel when your nausea started?

I’m 5+4 and last night dinner completely grossed me out. I gagged, but i was fine.

Lunch today (left overs) was also gross to me. I had some deviled eggs for a morning snack, also gross.

I have this unsettling taste in my mouth and when I burp the food is like right there. I also have no appetite (that never happens lol) Could this be the beginning of my nausea ?!