My health is scaring me

between the bleeding gums which have gone on for some 5 months now, and surgery tomorrow I’ve already been worried. But tonight at work, for the second time, I abruptly became lightheaded, dizzy, had an extremely increased heart rate i could feel in my throat, my temperature rose drastically and resulted in an unnatural amount of sweat, as well as an obvious bit of shaking. After my pulse evened out, I was really sensitive to everything. The light was blinding and i could hear the fluorescent buzz, and i feel every time my necklace or walkie shifted. And after I left I broke down in tears and I’m really afraid i’ve pushed myself too far and when I go under on monday, my body will be enjoy the rest of anesthesia and refuse to wake up afterwards. Also, I can’t eat at all tomorrow and I’m terrified this will happen again and without food in my stomach I’m really not sure how bad it could be.