Well Im 18 and for the past week or two just after my menstrual ended Ive been experiencing nausea, vomiting, stomachache, headache, frequent thirst and urination, dry mouth, fatigue but last night i could not fall asleep at first i thought it was because of the time change but it was already 11:00p.m. then 12:00a.m. and i finally forced myself to sleep at about 1:00a.m.So please anything would help i would like to know if it could become serious.
Hi. Your symptoms of nausea, vomiting, stomachache, headache, frequent thirst and urination, Chat Doctor.  This looks to be due to severe urinary tract infection with attendant symptoms. I would advise you the following:First give urine sample in a sterile container for culture and sensitivity before you are started on antibiotics. Also give blood for routine tests and kidney function tests and sugar. Ultrasonography helps in some cases. Get started on an antibiotic and supportive treatment.