First of all, it is important to know that if your diet has been restricted because of nausea and you have been unable to eat a variety of foods for a few weeks, try not to panic! This will not cause harm to your baby. The most important thing is to try your best to stay hydrated during this time. Focus on eating foods that appeal to you in moments when you have more of an appetite. For most women, pregnancy nausea starts to get better after the 3rd or 4th month of pregnancy. It is a good idea to book in with your prenatal doctor if your nausea and vomiting lingers around or continues to get worse, and you are having trouble gaining weight, or are experiencing weight loss. Do not hesitate to book in with a prenatal dietitian as well. Your doctor will provide you with treatment options to help manage your nausea. The first line of treatment is usually oral pyridoxine (vitamin B6 supplement) combined with doxylamine succinate (an antihistamine) to treat nausea and vomiting of pregnancy. In Canada this medication is called Diclectin.