I developed a fear of vomiting when I was 11 but I wouldn't call it a phobia because I only thought about it when it was happening or near me. I wasn't careful where I ate, washing my hands other than after using the restroom, and even caught a couple bugs and I wasn't even scared, although I never vomited.

In 2010 I experienced a traumatic event and it gradually started worrying me that I would vomit and then in October 2011 a horrible bug spread like wildfire through my family. Thankfully I escaped with only diarrhea and mild nausea but the waiting and anticipation was enough for me to develop a full blown phobia. I'm doing better but I know it's a matter of time until the phobia rears in ugly head and I slide back.