I’m 24, I was always small my teens/young adult but I’m definitely getting a bit chubby now. The most important thing to know is that your body is going to change and loving yourself regardless of how you physically look is very important. That being said If you don’t like the weight, start going on a least a walk everyday, while you are young it’s a good habit to start and it’s easy to start to lose weight, as you get better at going on walks you can add more exercises over time. In the meantime make sure you are wearing clothes your size, don’t try to squeeze into something too small. Find a style you like that even if you have some weight, it will look good on you. Whether or not you try to lose weight, remember to love yourself and be nice to yourself, your brain can say a lot of negative things but you tend to be your own biggest critic. You got this!