 [ Symptoms ] i wish to get pregnant but i am in contact with a person with cytomegalovirus cmv infection [ Disease ] as you lose weight your caloric intake will decrease meaning your body will need less calories to function as you lose weight you could not be eating enough calories as well if we do not eat enough calories to function our bodies will move into a starvation mode and we will conserve the calories stored and this will prevent weight loss the bmi calculator tool found here  is very useful in deciding how many calories to eat a day when you exercise you might require a few extra calories so yes eating more might help with your weight loss