i had it bang-halfway through our Montenegro holiday last summer...was out of action for about 3 days in all. I was being violently sick every hour for about 12 hours...even had to go to the hospital for a drip, can't remember exactly what they put in me, but it helped...after about an hour I could go back to our hotel room...thereafter it started slowing down. Dodgy meat in a posho-looking restaurant in Porto Montenegro it was.
Nasty feeling...if you're on your own at home and you have a similar sick-ratio to what I had, I'd consider going to the hospital or equivalent, you might also benefit from this drip. But if you feel it's slowing down now, then you'll be alright, just need a couple days to get your strength back.