Fruits and veggies

I'm 12 weeks RNY post-op, and desperately craving raw vegetables. I was told that I could start introducing raw fruits and veggies at 3 months, but I'm so worried that it'll be a painful process. So I'm wondering, what did you start with first? What did you tolerate well? What are you unable to tolerate? I really love cabbage salads. They helped me loose over 100 pounds before my surgery. Can I ever have raw cabbage again? My team just tells me to try it out. I'm nervous.