Symptoms of listeria? TMI!!

Ok so I ate a lunchable about a week ago and starting getting a pain in my upper left side and couldn't go to the bathroom for a few days so I took stool softener/genetle laxative and when I took them I had bright green diaherra one time but still had the pain and it was getting worse and then I started throwing up dark dark brown stuff that was considered coffee ground enemisis (not good) I was in so much pain and went to the ER and ended up getting admitted I couldn't keep anything down and was throwing up bright green bile they gave me stuff for nausea and to help me go to the bathroom today I finally got an enema and when I finally went it was just like my vomit bright green no solids or anything in my stool. My mom (who is an RN) says it could mean infection i gave a sample to my doctor here in the hospital but I'm just concerned I might have got an infection from something I ate :( :(