melatonin

I'm a single working mom of a 4 month old. I cannot go another week with no sleep. I'm desperate to try anything at this point. My sons dad suggested melatonin. He says he used it with his other kids when they were babies. I did my own research on it and it seems like one of those very controversial natural remedies. I will be talking to our pediatrician about using it but first I'm wondering if anyone here has tried it?