Ok so I have major health anxiety and ocd which also revolves around contamination so please be gentle 
My mum was eating earlier and bit a piece of her food off for ds who is 4.
She later said she had a cold sore last week and awful mouth ulcers but it had all cleared up now.
I could still see an ever so slight red raised patch on her lip when I looked for it and I'm now freaking out that d's will get a coldsore. Cold sores were one of my major issues when d's was first born so I always freak out a little when I see one.
I don't even know why I've posted just needed to vent a bit.