I would still try Imitrex Nasal Spray. It would work for your migraines despite of vomiting because it does not need to be ingested. A PCP can prescribe it for you. The important thing with Imitrex is to catch the very very first signs of an attach and sniff it then, without doubting that it is indeed a migraine coming. You get good at it with time. I cannot recommend this medication strongly enough. Also know that if at some point you will need Depakote for Bipolar, it will virtually eliminate the migraines as a positive side effect.