HELP. I have a simple question i woud like to get some opinions on~!?

114 lbs. is thin for 5'7" but it's not unhealthy. So many people would love to have your problem of not being able to gain weight. I can gain weight easily by eating before bed--sandwiches, pizza, ice cream, cheese or chips and dips. If that doesn't work for you, a dietitian might be able to help.