I think you should get to a rheumatologist and get evaluated for the various autoimmune diseases.

You are having way too many confusing issues, for a regular general practitioner.

Males can have a condition called Reiter's syndrome.
https://umm.edu/health/medical/altme...eiter-syndrome

It is possible you have Klinefelter's syndrome and this is making you prone to other autoimmune disorders... which have their own array of symptoms. So when you look at the whole list of your discomforts, they are all mixed up there and difficult to separate.

For example, a food borne illness of "stomach flu" type symptoms can come from poorly cooked contaminated chicken by a bacteria called Campylobacter. This infection causes all sorts of neurological symptoms (neuropathy) in addition to the vomiting and diarrhea, and this neuropathy can last a long time after the stomach settles.

Keeping a daily journal of what you do, what you eat and how you feel, may be very helpful for you to see what is going on, waxing or waning, and then may help your doctor(s) sort out what is important and what tests to order.