Your body does indeed need carbs to function. It's your body's preferred fuel! Carbs are not going to cause weight gain if you're otherwise eating at a calorie deficit. Fats are also important... as long as you're getting the right kind.
If you have dropped in activity, you may not be burning as many calories as you were before; 4 lbs is still well within a normal fluctuation range. We can shift that much in a single day! If you just started exercising, that can also cause a temporary increase in weight as your body retains water to compensate.
Writer, mother, wife, and breadwinner. I love to run, but running doesn't love me, so I'm switching to my low-impact bike.
I'm not pregnant, just fat: My blog. fatnotpregnant.blogspot.com/
| current weight: 190.6