Is stress causing this ?

Rachel • 2 fur babies 🐶 expecting our first lil one 👶, happily taken 👫💏 , nursing student🌻♋👩‍⚕️ , CNA /EMT 🥼⛑

So im a week late i thought we had finally got it , I was nauseous and nothing sounded good to eat ,certain food made me feel sick, this morning my period hit and im nauseous as heck . My stomach hates me. I just dont get why I've been so nauseous, and why i was a wrek late. Any ideas?