<s>[INST] hi i am 27 year old. it has been more than 5 months i am having very light pain in the left side of my lower abdomen and burning sensation after passing urine and urge to urine. whenever i vomit blood comes out within water. i had a endoscopy , ultrasound and urine examination done. reports are normal. but problem is the same. [/INST] hi, i have  read about your problem of voimiting blood . blood is not  normally seen in vomit with out any underlying problem like ulcers.as your endoscopy is normal that means you had a mild tear in the mucosa which can produce blood in forceful vomitings or when try to hold the vomiting. regarding your pain,burning urine and urgency to urine is because of urinary tract infection secondary to stones somestimes are not visible in tests(radiolucent) .please contact your physician,who can prescribe antibiotics. i hpoe this will help you take care ,have a good day bye. </s>