I have the same, minus the migraine at onset. See a GI doctor. Until then, your darned if you eat and darned if you don't. Thank God for internet and something to do while on my back! God Bless!
Nibmoc: On August 30, I read that scientists have discovered the gene on Chromosome 8 that causes migraine headache. As a lay person, I do not know enough about your condition to offer a home remedy. Johns Hopkins Medicine in Baltimore, Maryland, says there are more than 25 separate digestive disorders, many with the same symptoms. I know you need relief now, but all I can do is give to you a website that can provide a ton of information on digestive and kidney disorders. The website will take to Google, then click on the URL offered by Google: http://digestive.niddk.gov. Read about digestive disorders. I hope you find help.
Harrald