Migraine Headaches

I've always had bad headaches but lately with the added stress of the wedding I've been getting migraine headaches about every 15 days and they last for about two days each time. I've had them checked by a doctor and we had an MRI done and a cat scan and they have determined it is just stress migraine headaches. The over the counter medicine gives me stomach aches so I'm trying to avoid that. Anyone have any headaches cures that they could recommend? I'm really sick of feeling so horrible and I'm willing to try almost anything.