I too suffer from stress related migraines, i dont take meds to prevent them although i probably should as when it strikes i suffer severe headaches and vomiting for up to seven hours at a go.
I have meds to stop the sickness (Metoclopramide) which are a big help because once the vomiting stops it eases the head aches.
For the migraine pain i use (propain), not that it usually helps as it doesnt stay down long enough to help.
A migraine can knock me out of action for up to 4 days and i wear dark glasses for up to three of them as the headaches linger on after the initial migraine has passed.
Not a pleasent thing to suffer with at all xxx