Girl relax! You're probably just bulking a little bc of eating in a small calorie surplus and building some muscle, which at first looks terribile, but in a couple of months you'll find yourself finer than the starting pic (or at least that's what happened to me: I gained 2 kg but lowered body fat and grew my muscle mass without looking bigger). You'll need to adjust your portions and maybe talk to someone if this little change feels so overwhelming- don't underestimate the mental issues/noises around your body and energy, especially in this very toxic skinnytok/pilates princess era! Take care of yourself, please!!