Help! Morning sickness is killing me!

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I'm 9 weeks pregnant with twins and I wake up every single night at 3AM and with that mouth watering feeling like I'm going to throw up. Once I'm up that's it- I'm up for good and I spend all morning running in and out of the bathroom either vomiting bile (though trust me I've been eating like crazy) or dry heaving. Does anyone have any suggestions on how to make this stop? I miss my sleep and I hate waking up sick every night!