I have a recurrent e. coli urine infection for over a year now. alongside a recurrent case of what i believed was bv but after numerous tests, coming back negative still no closer to the cause. i believe they must be connected what std could it be?

Chronic UTI: A year long urinary tract infection requires a Urologist to identify the cause if the UTI if documented on each occasion and is non responsive to antibiotic Rx. Most causes in females are due to urethral/vaginal/anal proximity or obstruction. If your vulvar hygiene is without reproach, then further Urologic testing is appropriate. STD negative testing will rule that out as a cause.