Suggest Treatment For Migraines

I am suffering from severe migraine I am presently taking inderal naproxyn and amitryptilline. though not regularly, I am allergic to paracetamol migranil and sulpha group of drugs. Even the present 3 medicinews cause swelling and redness all over mybody, I suffer from 2-3 episodes every month which is very severe, These drugs do not help nowadays. There is no specific triggers also present. please guide me