Serious digestive issues

[MrFranklin]

I have been searching the the internet for answers. However I see my symptoms everywhere but never all of them together. I have diverticulosis and have experienced diverticulitis. It has been year since a major flair up. I was also diagnosed with lactose intolerance.
  With that being said the problems I'm experiencing now is unlike anything I have previously experienced.
It has taken over my sleeping cycle. I have been experiencing intense intestinal cramping strongest at night when I am trying to sleep and, periodically waking me in the middle of the night and then again in the morning. Relieving my bowels have gone from a 5 minute event to over an hour. Often after eating a meal no matter the size, the food rises back up into my throat it is not usually acidic and it can be hours after a meal, I've begun to feel nuasua randomly. Now I am experiencing a burning sensation comparable to drinking straight vodka except it seems lower somehow.
The only thing that seems to help though be it minimally is peppermint oil
I eat relatively healthy whole grains vegetables lean meats and eggs
I'm a 27 year old male, and to be quite honest I'm scared. I am recently out of a job, but I'm to ill to get another.
If there is anyone who knows what this is and what I can do I would be very greatful.

[Caryopteris]

I agree with above, but you can be getting deficient in things.  Magnesium deficiency is a big problem for many people.  Take Magnesium citrate 500 mg in the morning and also vitamin D at least 1000 IU.  

Get checked for Celiac.  You may at least have gluten intolerance.  

[deb62gee]

Agree with other comment, but would take it further and get checked for Celiac Disease. The whole grains could be what is making you so sick.

[cnoevl21]

Have you been tested for a gluten allergy? It can cause most of the things you are experiencing.