Went to the ER..

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Last night I was throwing up so badly I had to go to the ER. I was severely dehydrated and couldn't even keep a few sips of water down for more than 10-15 mins. When I got there they hooked me up with an IV and rehydrated me, also gave me some anti nausea medication. I'm 7 weeks in only two days from now. I have a gluten free diet due to allergies, and that alone is hard becasue nothing gluten free is appealing while pregnant. I just want saltines like everyone else..

Can anyone tell me if this has happened to them, and if so, did it happen repeatedly where you had to go to the hospital, or did you learn to avoid it? Please help:(