I've wanted to gain weight my entire life. I'm 20 years old, 5'0 and weigh about 95lbs, I've only hit 100lbs once in my life and lost that weight in a few days. I want to gain about 20 or 20+ lbs and I want the weight to STAY on me for once, I'm absolutely desperate at this point, my goal is to get curvy, but I can't seem to find these anywhere that ships to Canada. Can my doctor prescribe them for me?