I Have Had Pit Tumar Removed 2 Weeks After Being

I have had pit tumar removed 2 weeks after being diagnosed diabetic type 2. since my surgery i have had two episodes that have scared me badly. i got severely cold and my body shakes badly and can't speak it lasted like this for 20 min. i felt near death. i took glucose tab covered up and focused on breathing although hard to breath. if i was by myself i don't think i would be living. any ideas?