Not motivated enough to diet and exercise

Jerelly • A 24 years old newly wed wife.
I always in a 45-47kg range but after chinese new year my weight gained up to 50kg! Even some people said that is not over weight for me. (But some are saying that i look pregnant!) Yes, my bmi also saying that im in a normal weight but i dont get used to it. I want to diet and exercise but i dont seems to have the motivation too. Im feeling lazy and tired. My height is 160cm and i have a pear shape body so i think 50kg looks almost chubby for my bottom side of body. So stress, then i keep munch on the chocolate cookies! Then i got this very huge pimple too! Ok im feeling sucks now......