Suggest Treatment For Migraines

hi im kellie im 21 and since the age of 17 iv had nothing but terrible migrains where there that painfull i feel and sometimes i am sick!, iv been to the doctors so many times in the last 4 years but all they keep doing is giving me different tablets and telling me to drink more water.... this is not helping it is that bad now that i want to take loads of tablets to go to sleep and never wake up dson't know what else i can do don't seem to be getting any help