This is Dr. David
I am sorry you are having these symptoms
some urinary tract infections don't cause symptoms.
you need to get blood test to check for abnormal thyroid hormone levels
abnormal thyroid hormone levels can cause dry itchy skin.
and also to check for autoimmune disorders with blood tests to check for ANA, ESR, C reactive protein, anti ds DNA antibodies and Creatinine Phosphokinase to check for inflammation of your muscles.
autoimmune conditions can cause itchy skin.
you need CBC complete blood counts and coagulation blood tests to check your platelets and blood clotting ability.
yous should get blood test to check for mononucleosis viral infection which can cause fatigue and sweats.
you should get vitamin D and B12 and iron and ferritin levels checked as well.
have you had these tests so far?
do you have a doctor you can see who can check for these issues?