I am in so much worry right now!!

Heres my story of the last week;

Last Saturday mum suddenly got stomach pain and *n, she went out Saturday night to a wedding, I thought nothing of it, she continued to moan about cramping all through, I went away to petsit for someone on Monday, so didnt see her.

I rang most nights and popped back on Wed, Thurs and Fri. Both times she seemed fine and was cooking dinner.
Today I went to my sisters to help her move into her new house, she went to the toilet, I went straight in after her, went to wash my hands and realised there was no soap, que some panic.
Got into her car and saw a packet of mints, took one out with my hands, just as I put it in my mouth she then tells me she has had 'the worst sv* ever all week and was off work until Wednesday'
Great! So I went to the loo after he touched the flush and didnt wash my hands then touched the mint that went into my mouth, I can just feeling it crawling inside me :'(

I thought that was bad enough, then mum starts moaning her stomach is still hurting i say to my sister maybe mum should go doctors if she has been having bad adominal craps for a week, my sister then tells me its just a sv*, to which I reply but she has not d* or v* at which point my sister says she has v* at work in the week but didnt tell me.

So I am doomed, ive been popping to see my mum at home in the week so either already have it, or picked it up today from my sister.

Start the 72hours countdown now and let the panic commence :'(