Early symptoms

What’s the earliest you have experienced pregnancy symptoms? I had extremely bad nausea and morning sickness with my first, and we are currently TTC our second. I’m already feeling super nauseous and hot, just like I did with my first, although I can’t remember how soon I got symptoms with her. It’s still way too early IMO, because I have not even missed my first period yet. I would be in the early stages of implantation if anything.