I'm 5'2 my weight is 88 lbs and I'm 18 years old and I eat like a pig is there something wrong with me I want to gain some weight what should I do?

I know that I should be grateful for how I am. I'm always hungry I can't tell when was the last time I had a full stomach and I eat very often. I think that I would look better if I gained some weight, I don't think that this is normal what should I do?
I'm 5'2 my weight is 88 lbs and I'm 18 years old and I eat like a pig is there something wrong with me I want to gain some weight what should I do?
Post Opinion