Not enough gain weight during pregnancy: what can I do?
First I would ask why you think you are not gaining enough weight? Is your doctor concerned about your lack of weight gain? If you doctor is not concerned about your lack of weight gain then you don't need to worry about it. There is no reason that you have to gain weight during pregnancy.
It is recommended that women gain no more than 30lbs during pregnancy and most research is even indicating 30lbs is too much. Weight gain over 30lbs increases your risk of a number of health problems, such as gestational diabetes and pre-eclampsia.
If you started out your pregnancy a little overweight then gaining less during your pregnancy is recommended. If you started your pregnancy underweight then you need to maintain a healthy weight and gain weight during pregnancy.
If you doctor is concerned and wants you to gain weight you should gain at a slow steady pace. It is recommend that you eat a larger volume of healthy foods and healthy fats to increase your weight. Try drinking whole milk, eating avocados, and adding olive oil to your food.