Stomach issues~help!

 This is my first post. I am 12.5 weeks pregnant with my 3rd child but first after RNY almost 2 years ago. I went from 289 to 145 after surgery but I am only 5'2 so technically I am still very overweight. Anyway, my concern is that after I eat or drink anything, I get an uncomfortable feeling in my stomach. It is sometimes pain, sometimes cramps like I need to go to the bathroom, and sometimes just an icky feeling. I don't remember having this prior to being pregnant. I could basically tolerate almost anything in moderation but now I am finding that I only want fruits/veggies and carbs. I even eat chocolate........it helps me stay regular with the iron in my prenatals. 
Anyone else experience weird stomach feelings being pregnant after WLS???

I am experiencing something like that now and I am not pregnant anymore. I have a pain directly under my belly button after I eat, no matter what it is I eat! I went to the ER last week because it got bad. they could not figure out what it was. I have an appointment for an upper GI with a small bowel follow through set up for next Monday. Hopefully I will get answers then.