The average weight gain during the second trimester is between one and two pounds per week. It is important to remember that every pregnancy is different, so your doctor will be able to provide you with more information on what is right for you. 

Common symptoms of the second trimester may include increased energy, a decrease in nausea, increased appetite, increased fetal movement, stretch marks, and varicose veins. Other common symptoms include back pain, headaches, skin changes, and the development of Braxton Hicks contractions. 
 

It is important to take a prenatal vitamin with folic acid, iron, and other essential vitamins and minerals.