19 weeks pregnant

Has anyone got any remedies that have worked for cluster migraines I tend to get them every few weeks 2 or 3 days in a row!!! It's so bad I have it through the night up every hour. It's horrendous. Was taking sumatriptan but now read can't take in second trimester and don't want to risk it! I'm a usual sufferer since age of 16 until I have my neck cracked last year, then they all went!! I am looking into chiropractor today to see if can get it done again when pregnant! But anyone have any treatments that may help? Thanks