Hi I m a 24 year old female, I ve been wondering if I have undiagnosed diabetes. I ve had frequent peeing for some time and for about a month I ve been sweating really bad even when it s cold. I have also been very fatigued, more so after I eat. When I don t eat right away I start getting a headache, feel fatigued, dizzy, light headed, nauseous, and the feeling of passing out. And within the last few days I ve started having a bad Memory problem, I can t remember what I was about to do or what someone just said to me. I ve also had swelling in my hands and feet the last four days and it seems to just come and go with no triggers.