pulling and tugging

so I got up to go use the bathroom I walk out and all of a sudden get (TMI) a butt hole cramp like the ones when your on your period..well then I got a pulling feeling in my uterus in the middle, felt like a pulled muscle getting on my bed was tough the pulling lasted maybe 2 mins..I took a test today came back negative. I get my period on the 3rd don't wanna get my hopes up but could this be a sign and I just tested to early?

edit: other symptoms..

-ive felt nauseous after eating

-dizzy

- & super fatigued like I put my head down and I'll fall asleep!