Possibly pregnant??

Renata
So lately I've had the shivers like I've had a fever but it doesn't appear to be a fever, my appetite has disappeared completely, I'm super dizzy and my head feels like it's gonna explode, my stomach has started to hurt pretty bad at night and I'm always sleepy now. Usually these symptoms would only appear mildly when I have my period. But it just ended it about three days ago and all this normally would have ended. Then today I've started getting emotional like I would be on my period. Can someone please explain if this could be pregnancy or whatever it could be before I go and take a test?