problem with solid foods at 7th week

hi, I am 7 weeks post op today. I am having a real hard time with solid food. My Dr., Nicholas Bertha, told me to start on solid foods during week 2. As of today, I puke, whenever I try solids. I tried to eat a piece of chicken, melt in your mouth moist, the size of my pinky nail, chewed to mince, and no condiments, I puked for 2 hours. My doctor is referring me to a gastro intestinologist. Has any one else out there had a similar experience? I don't have any trouble with chili, mash potatoes, or oakmeal, yet the first swallow of chicken, eggs, cheese is very unpleasant. Please help. Roger