Last night I had taken some tylenol sinus medicine and then had a protein shake about 20 minutes afterwards. About 15 minutes after I had finished my protein shake I felt like I was going to vomit. I didn't, just dry heaved for about five minutes. But while that was happening I had major chest pain right in the middle of my chest. I am not sure what caused this chest pain. By the way I had RNY almost 4 months ago.