Opinions?

My last normal period was June 26th - June 30th. From July 23rd - July 30th I experienced spotting, never got heavy was either light or barely noticeable and was only when wiping, only a couple times ever had anything on a pad and it was barely anything. It was brown mostly sometimes a pinkish, so I’m assuming it was just a light period? But today I have been so nauseous on and off, the thought of food turns my stomach, and this morning it was so bad I ended up vomiting...wth. I feel like I did when I was pregnant, I took a test just few minutes ago and it was negative. 😩🤢🤢