is it okay to drink water now ?

i've been throwing up since around 4AM..ended around 9AM. I've thrown up around 5 times.. (as you can tell ..it's traumatizing) it's 3PM now and i still haven't thrown up again, i just feel queasy, not as queasy as before. I've taken two naps hoping my stomach would be settled by now. Is it settled but just feels queasy from the aftermath ? Can i start sipping water and eating apple sauce? I think i feel queasy from maybe being dehydrated?