I Am On Flagyl For A Discharge That Would Not

I am on flagyl for a discharge that would not go away when given an antibiotic for yeast infections. Was told I had bacterial nfection prior to flagyl. Since taking the medication I have trouble sleeping in evenings, from about 4 am on I can sleep, then feel tired all day. I do not work and try to stay awake during 12 pm on. I go to bed by 11:30 pm, but cannot sleep. Toss and turn, sometimes duty to leg cramps. Can the flagyl be the cause?