GOD AWFUL.
You start to yawn constantly, eyes tearing up watering. Hot and cold flashes, cold sweats. I just feel chilly no matter how many layers of clothes or blankets I have, until I DO feel warm, then I feel incredibly hot.
The insomnia just seems to never end. Three days without sleep will have you incredibly tired and irritated, and no matter how hard you try to sleep, your achy, sweaty, cold, shaky, sick body won't let you. You are exhausted and lay down, only to want to kick around in your bed because you're so uncomfortable. Whenever you find a slightly comfortable position, some other part of your body starts to ache and just NEEDS to move, like restless leg syndrome but with your whole body.
I can't wait til this is over.. I can't wait to be off these f'in drugs. Right now I'm on day 4 without any opioids, I was on suboxone for a year then started relapsing on heroin again after running out of suboxone. Never had to deal with withdrawals this shitty, although I'm sure many people have had much much worse times than I.