Only able to eat soup while pregnant!

For the past few weeks, I try to eat a little orange or something small and no matter what type of solid it is, I run to the bathroom in intense pain and struggle to make a bowel movement and throw up sometimes. It’s one of the worst pains I have ever experienced. No i don’t lay down after eating and ive tested different kinds of healthy foods, still running to the bathroom from stomach pain. I’m afraid the baby isn’t getting much nutrients if all I can eat is soup, and thick soups are a no go as well! only chicken noodle sometimes not the chicken. Any suggestions? :( Crackers are situational, sometimes okay, sometimes not.