Welcome to the forum *C*. It's good that you're seeing a therapist to help you through this phobia.

Washing your hands before eating, after using the loo and when you get home from school should be enough but I know it's easy to say that! 20 seconds is a reasonable length hand-wash so that's the amount of time it takes to sing the alphabet song!

I have emetophobia and severe ocd, it started when I was 7 after a family member v* blood and fitted before dying (he was severely disabled and had a condition that killed him, v* was just a side effect of his disease) and because my younger brother used to choke a lot with another condition and it reminded me of v*. Also I was kept away from my Mum when she was in hospital because I got a really nasty tummy bug so that didn't help!

I hope you find lots of support on the forum