No doubt you had some type of intestinal flu. Not sure what is going around but my neighbor had almost identical sx. She was very sick with the diarrhea and temp, and myalgia. Her recovery was slow but after about 3 weeks she is "well".
Glad you got some help from your neighbor. Gout is very painful. If you have never had it, I am surprised that it came upon you at that time,as it is a disease of excess retention of uric acid in your system, from over indulgence of foods high in purines. If you get some lab, and your uric acid is not elevated, I would doubt the dx. It also causes deposits of uric acid crystals in the areas involved. There is a classic old picture of an older man with a red swollen big toe joint and he has a little devil on his leg with sharp fangs buried in the joint. It reads: "Old Devil Gout has got him by the toe." And that says it all. Glad you are on the mend.