I know exactly how you feel, I was like that the first trimester and half of the second one, went twice to the er for fluids.The thing that has helped me with nausea was Zofran (ondansetron) you can take as many as 4 pills a day and it's safe for the baby. You do need prescription for it though. It will get better after 13 weeks, just hang in there, think about the baby and try to hidrate yourself, gatorade is good, try the lemon one. Good luck!