TTC first time ever

I have a daughter turning 5 in August, she came unexpected. I've been with my SO for 2 & a half years already & just decided we wanted a baby. This is my 3rd cycle trying, today is the first day of the TWW. I hate waiting. :( would I feel symptoms this early? I noticed yesterday & the day before, I've been feeling more nauseous than usual. I LOVE shrimp & made some for dinner Wednesday & just ate one & it just absolutely disgusted me. & now this morning, I ate Whataburger for breakfast & threw it up. I haven't thrown up since a couple years ago & it was bc I was drunk. I just don't wanna get my hopes up! :/