About A Half Hour To An Hour After I Eat

About a half hour to an hour after I eat I get severe stomach pain and lasts for an hour or more. I also break out in a cold sweat. I had been diagnosed with a Peptic Ulcer a couple years ago and I have been on Omeprizole about as long. Any ideas what this might be? I am 55 female with Diabetes type 2 under control with oral meds and insulin, I also have depression, anxiety, and Fibromyalgia. This stomach issue is new just in the past couple weeks. Thank you.