Trichomoniasis
"I was prescribed four 500mg tablets to take at once to treat itch. I made sure to take them close to bed time so I can sleep thru the cramping and nausea. 
Took with a pepsi so I could mask the taste. Odor is gone next morning. 
I took some probiotics with the pill to lessen my chances of catching a yeast infection from the antibiotic. Discharge and itch still present. I will  update later  on the  effectiveness  of this treatment after a week."