Chronic Hiccups?

[StellarMajor]

For about a year now, I have had what everyone tells me are the hiccups. The only way I can describe it is like a hiccup except much louder and stronger (to the point of, it has made me vomit on rare occasions).  It does sound like a hiccup, but it's not MY hiccup, if that makes any sense? and I still get the regular old hiccups that I would normally get on occasion along with the weird version I've had for a year now.  

I get these "hiccups" daily at random times, it doesn't seem to matter what I am doing, there doesn't seem to eb a trigger, it seems to be a completly random spasm.  They are mostly annoying and embarassing, altho as stated before they have on rare occasions been strong enough to make me vomit.

Doctors look at me like im nuts and they have tried heartburn medications which have done nothing and other than that they just tell me i have the hiccups and thats that.  I did go to a gastroenterologist when i was in high school (im 22 now) for a dairy allergy that seemingly pooped out of nowhere (im good as long as i don't over indulge).  Also. since the hiccups started...i've developed migraines and have never had a history of even having headaches. Don't know if any of that is connected but giving you all the information to help maybe get some sort of information besides i have the hiccups.

So that is me. Weird hiccup like spasms. Incredibly loud. All day, Multiple times an hour altho not completly constant (very random) that nothing seems to trigger and nothing seems to stop.....any ideas?