Occipital Nerve Block

Hello, I have been suffering with migraines since the birth of my son, almost 8 years ago. I have tried anything from acupuncture, physical therpaists, all types of preventitive meds. The latest thing that my doctor is suggesting is "Occipital Nerve Block". Has anyone tried this? What are the risks? Does it work? I am really desperate. Nothing works. I live with constant headaches. Having a small child to take care of withouth any help (except my husband) is extremely hard. Please email me with your thoughts. Thanks.