Weight!!

Does anybody else get frustrated about loosing too much weight? Or am I just the only one. People make fun of me when I say I want to gain weight. Nobody understands. I am 5 feet tall and weight 103lbs and I hate it. According to Google that's exactly how much I should weight at my height. But I'm not happy with it and no matter what I do I just can't gain weight. I want to gain at least 5 pound and idk how. Please don't make fun of me, I just need some advise!!