Answer: Yes unisom (doxylamine) was orginally made for women with morning sickness. You can take 1/2 of a unisome and a B6 vitamin and it will help nausea and help you sleep as well. This past week I was in some horrible pain and the doctor even prescribed me Ambian 5mg to help me sleep. I hope you get to feeling better. Good luck.** I love some of these answers.. call your doctor they can confirm this. You are not the only person in the whole world having trouble with sleep and nausea while pregnant. But make sure it is in pill form.. not the gelcaps.. you will only be able to take 1/2 the recommended dose.