Symptoms:
-sinus problems (take claritin d daily, yet the conjestion never ends. Constant sinus infections accompanied by fever)
-ulcers in mouth and throat (very frequent, and the spots in my throat tend to be nickle to quarter sized and stay for a long time/ not strep)
-hives/rashes (sometimes seem to be related to sun exposure or tanning bed; other times less obvious causes/ tend to be on abdomen-a few times spots spread to my face)
-viruses like shingles, mono, and plantar warts keep coming back (poor immune system?)
-fatigue, sudden weakness, and shaking
-mood swings/ anxiety (especially when fatigued)
-slight weight gain
-joint pain

i eat well, drink plenty of fluids, take vitamins, exercise, and get an appropriate amount of sleep. These problems have all existed for as long as I can remember, only they have become more difficult to deal with as of late.

Family history:
-brother with diabetes (seems to run in family)
-mother has had shingles multiple times

i was wondering if these problems could be related, and if so, what type of doctor should I see? I am tired of going to med clinics and walking away with an antibiotic only to have the same problems return. As an engineering student working to pay my way through, constantly being sick makes it almost impossible to carry out my work load. Any help, advice, or possible diagnosis would be fantastic.