My Doctor says colonoscopy shows Crohns disease, need second opinion?

Hello , My name is (…) I am 22 years old . I have recently been having some mild stomach pain but also a lot of burning sensations in my upper stomach . I had an endoscopy done and a colonoscopy done and would like a second opinion about my biopsy results . My doctor says its not Crohns disease but what is it then ? It says that I have lymphoid hyperplasia and mild duodentites and mild gastritis . What does This mean ? And wht is the treatment ?