bacterial infection
"This is my second time being prescribed this for BV, no symptoms. Went in for abnormal bleeding that subsided with Hormone cream (weird I know). They tested for everything and ended up with BV and Myo/Ureaplasma. I was taking this in conjunction with Doxycycline. 
The taste of this medicine is horrible. I was prescribed 2 pills a day (500mg) tablets for 5 days. Pretty sure this will clear it. It does give you fatigue, sensitivity to light and slight nausea but better than an infection. I would eat a heavy meal before taking this and take it same time each day.  Good luck Ladies."