I've never felt this kind of sick.
Papa Nurgle will make you feel all better :chaos: :hugs: . But really, keep note of your temperature. When you dip into 102 degrees get to a hospital immediately. Note any strange or very unsettling changes, drink some 7-up, have an emergen-Cs (or other high vitamin suppliments, a packet or something, you don't want to have more than 1 a day) have some saltines, and stay in bed. I advise to not play videogames and watch limited TV. Best thing to do is rest and keep yourself warm in bed. Dress into some very comfy pajamas or other sleepware that'll also keep you warm. Judging by how cold you are, you are probably running a high temperature(likely +101).
If you feel a lot better in the morning, it was food poisoning, which I have caught quite a bit. Those are really intense, but thankfully short lived. It's also a great boost for the immune system! I never got sick afterwords, even when one of my bothers was a giant plaguebearer.