Whilst waiting to get the medical help already suggested, I've folund, even after 2years of sobriety it is a good thing to eat some sweets/candy or chocolate and to sleep, or if possible find some distraction, talk or 'phone someone, it breaks the cycle, a good walk even.
When I first got sober I lived on soya milk, sweets and cigarettes for the first three months, since which time I still do, in moderation. It is easy to be to hard on yourself whilst also expecting to much, good luck!
Don't beat yourself up, okay.