I get migraines regularly, usually 1-3 times per month. I tend to get a pain over my left eye and become hyper sensitive to noise and bright light as the first signs of a migraine ... often it is associated with a feeling of nausea in my throat and gut. Sometimes I get a complete stomach failure and I am sick. It is often accompanied by diaorrhea.
I think the most common triggers are caffeine intake, variable sleep patterns, stress and alcohol. I most commonly get migraines on a weekend after a busy week of limited sleep, too much coffee and after I have had a lie in.
I have used Sumatriptan for a few years and I find it always treats my symptoms especially if I take a sleep after taking it. I am not aware of any side effects other than drowsiness.
I feel I am in control of my migraines now by using this medication.