I came down with the gastro stomach flu Monday night (throwing up, nausea, cramping) since then, only diarrhea. Can I kiss my gf when I c her Saturday?

Yes. If you are not having fevers anymore, you are most likely not contagious. The diarrhea is probably just residual from the infection. That being said, be sure to let your girlfriend know so that she can be aware of the (small) risk of getting it. Hope this helps!

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I have a stomach flu, possibly gastroenteritis (vomit, cramps, diarrhea, nausea) - is it safe to go without food for the first 24 hours?

Drink liquids. It is safe to go without food for first 24 hours if you can't tolerate it -- but be sure to drink plenty of water, ginger ale or other non-alcoholic fluids. Some meat or vegetable broth might be good too. Read more...