Hi,
Welcome to Health Care Magic,
Your symptoms suggest urinary calculus, which is just near the
urethra, and it is about to come. Did you have any history of urinary stones before? This is my first diagnosis for you, as you are passing blood in stools with negative culture reports, and No
vaginal Discharge, pain in flank with urgency of urine, and scanty urine. You must drink lot of fluids, and strain your urine to confirm passing of stones. Your Doctor can confirm and remove stones in urethra, if there is any.
Though there are chances of some STD's or Non STD's infection of
uterus and Adnexa, or vagina or urethra.
it is better you see the Doctor again. it is very common problem, and Iam sure you will be better soon with proper diagnosis and treatment.
Dr H Hamdani