So I weigh about 170 and have been tracking my calories so as to not gain weight in the first trimester. My calorie tracker app gave me about 2100 calories to eat a day but I decided that I want to up my calorie intake because I'm starving all the time and am about a week away from the second trimester but when I put in the app that I wanted to gain a half pound a week. (that will make about 15 pounds by the end of my pregnancy) It only gave me an extra 30 calories and I know that can't be enough for the baby so how much extra should I realistically eat with already being overweight and not wanting to gain much fat during my pregnancy.