Definitely drink more fluids than prior to surgery, I am having shakes sweats etc but mine is due to me cutting down on my pain med strength slowly since I have been on Fentanyl patches since April...I had a total of 3 surgeries with many complications though. !st was resection & removal of fistula, complications ...toxic megacolon abdominal abscess...2nd Sx 1 week later was the temp ostomy, wound got infected thanks to an incompitant resident, stoma did not heal right and caused another abd abscess....actually 3, 3rd Sx was June 20th and was reversal of ostomy, more of large and small intestines removed, abscess removal..scraping of abd walls due to inflamation and infection and many adhesions...nowI have a local infection due to sutures grown into skin so part of the suture made its own way out after the Dr removed the knot.
I also had weakness and dizzy / sweats I feel that may have been due to dehydration but I dont really know for sure. As for heart racing I have that issue all the time my avg pulse is 105. Through most of my recovery it was slightly higher but while in the hospital mult times when I was having issues it was going as high as 151. Make sure you keep tabs on your tempurature. I would call your GI first since they specialize in the areas removed and inform them tht your surgeon is away.
I also had many issues with vomiting after my ostomy surgery luckily you are not having that happen.
Good Luck wish I could hep you more, make sure to monitor your vitals to the best of your ability and go to the ER if you have too
Dx with Crohn's 1987, symptoms as early as 1984.
Temp iliostomy February 2007, reversed June 2007, Ovarian cysts, migraines, allergies (incl food allergies) , oral allergy syndrome (diff than true food allergies), Asthma, Gall Bladder removed 1999, Inguenal hernia 1987