Yeh, I have them. I have not been formally diagnosed but when I talked to Pdoc about the symptoms my Dr couldn't figure out (thought maybe they were scary med side effects) she said I had migraines without headaches and stomach migraines.
I am getting better at knowing and avoiding my triggers and use a lot of homeopathic stuff to deal with them seeing as I am technically undiagnosed and my insurance is currently non-existent.

I use:
rescue remedy (bach flower remedies) that I can't intellectually seem to believe in but it helps.
M-Grain which is a young living essential oil blend. It is very expensive but you don't use much (I put it in a defuser/oil warmer). There are also politics against young living but I have not found another brand of oil for hedaches/migraines that compares... even if there is not headache.
For me a higher protein diet seems to have helped.
Pdoc says when you get one your stomach shuts down so trying to eat doesn't usually work. Which I have found to be true... couldn't figure out why I kept getting sick!
My weighted blanket helps but that may just be because most of mine are stress induced and my blanket helps reduce stress.
If you are really open minded I have found that aquamarine helps (yep, the rock).