Severe Morning Sickness...help!

I have not been able to keep anything down (like anything at all) until mid afternoon, every day for the past two weeks. Even after that, I cannot eat much as I am so so sick and have terrible heartburn. It is getting to the point where I know i am getting dehydrated. I have struggled with low blood sugar in the past and I know that is also making me feel worse. I have my first doctors appt next week and do not have insurance coverage until next week, and I researched the price of anti nausea medication...yikes. So aside from prescription drugs, what tips or remedies have helped you guys?