Nausea before af? What is going on!

Last month I was a week late and tested had 2 faint positive then every test afterwards was a negative, ended up being what I assume was a chemical pregnancy since af reared her ugly head 9 days late. Af starts tomorrow and I was so nauseas this afternoon I couldn’t even take my lunch nap ☹️ nausea isn’t one of my symptoms of af until after she arrives and the pain kicks in. Not wanting to test until af doesn’t show because I hate testing (odd right? Lol) would love to hear other past experiences similar to my situation. Keep me distracted until it’s time ❤️