Should I go to the doctor? ( Mystery diagnosis)?

Im 17 going on 18 soon and its been happening since last year i get frequent headaches one side of my head would throb ot both sides and times i would randomly be nauseated. During my headaches i would feel the same way at times. My body always ache different joints would hurt. I get tired very quickly even though i have good rest plus im an athlete so i excises frequently. last time i went to get my lab drawn i was showing abnormalities wit my white blood count and my kidneys . Plus my hair sheds allot lol. So should i go to the doctor or is it something i can fix myself?