Hello. My Husband Has Had A Migraine For The Past

Hello. My husband has had a migraine for the past 2 weeks and it seems to be getting worse, not better. He has been to see his normal GP and was prescribed Toradol injections and morphine patches which doesn't seem to have helped this time. He was also given a Valium injection & a morphine injection at the GPs office. He has been to see the GP twice and has been given the same regime as I have mentioned above twice in the last 5 days. He routinely gets these types of migraines every 3 months and the 'fix' from the GP has been routinely the same ... which is clearly not working. Other things that are happening to him right now are also slurred speech, loss of appetite, loss of balance, constipation, not thinking clearly, insomnia - that's all I can think of right now. He has previously been to the hospital and put on a saline drip to re-hydrate him & then given an injection of Tremol which also wasn't successful. Please help me, I don't know what the next step is and its hard to see him in this much pain and not have any options. With Thanks Kylie