I took metronidazole (pill form) for a BV infection. I finished taking the pills last Friday. Starting about four days ago I started experiencing itching. Then two days ago the discharge turned brown. There is some red little clumpy looking things in it. I was told the antibiotic I was on can cause yeast infections, so I started monistat 3 combination pack last night. I plan on finishing the treatment for the yeast infection, but is this discharge caused by something else?