hope you're feeling better soon

I would probably ring them and see if you can come in later in the week or early next week. You probably don't feel like going anywhere, and you don't want to run the risk of spreading it to other pregnant women/newborn babies.

I think every gastro bug is different but I'd say 24-72 hours. It can bring on labour, not sure if it would at your stage but just be vigilant and if you feel any contractions call your hospital just in case as they may want to monitor you & bubs.

I'm not sure if you can take electrolytes while pg, but if you can I'd be taking them too as they can be a bit more effective than water at rehydrating you, you can also get them in iceblock form.