Tuesday a sore throat started- felt like a knife wound at the back of my throat. I stopped eating sugar and started zinc+echinacea lozenges. (I used to get this with Strep- until I stopped sugar, I never beat it). (Usual diet is mostly fruit + veg + snack on nuts and dried fruit.)

Diarrhea started Friday. I started a diet of water, apple juice and rice krispies (about 1000 cal all day)- by Friday night only water and gas remained in my gut. Saturday morning the sore throat was gone- diet was chicken broth, water and jello. Occasional itching started Saturday- inside the wrists, in the groin area and a bit elsewhere. I took 2 loperamide before noon and one later in the day, it seems to make no difference. Sunday a topical benedryl helped the itching- mainly water all day, jello in the eve. In the afternoon I took 2 pink bismuth subsalicylate chewables- seemed to have made no difference. This morning (Monday) I awoke with a very swollen lower lip...

I'm 54, male, 165 pounds, 5' 11" and fit (exercise for 90 minutes almost every morning for last 2 yrs). I was on a bit of a diet and lost 3 pounds (172-169) over 2 months. I've lost 4 pounds the last 3 days. My gut is still just water and gas (gurgles a lot if I massage it) and all that comes out is liquid and maybe 2 tbsp of foul-smelling mud every 2 hours.

My gut aches slightly. I'm tired, slept a lot Friday, a couple naps Saturday and felt more normal Sunday- slightly fatigued.

Suggested course of treatment?
How long can I safely wait before seeing my doctor?
Am I contagious- can I go to work a bit?
thx