bacterial infection
"Was prescribed flagyl for BV but was never entirely sure I even had it as no tests were conducted. Took the pills and am so happy tomorrow is my last day! Literally the worst side effects ever, day one wasn't so bad just had metallic taste in mouth but every other day I've experienced headaches, nausea, and extreme fatigue to where I'm sleeping all day. The medication is so much worse than the slight issues I even had."