bad stomack few on week 27?

hi! I got some really nasty stomack flew, I am running to the toilet a lot AND have very runny - water like exists... I also feel pain in my stomack. This has been a bit over a day like this. I am worries for my baby, does this affect her too? I feel her move... Do I need to go see a doctor? OR if I feel better within the next day just egnor it? I am sorry but I am in Mexico AND can't write OR read hebrew, plase reply in english worried Thank you!

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