Advice

My doctor says I'm underweight.

This was a couple months ago, but it's been stressing me out. Most say it's not a problem and I should be happy I'm the weight I am, but when somebody says your too skinny it bothers me, and when someone says I'm gaining weight, it bothers me. I've been 5'1 and around 95 pounds since 4th grade. I am now 18 years old. When I go over the weight, I feel gross, and when I'm under, I feel sick. I dont want to be hated on, I know some of you wont be happy with me being 95 lbs and upset, but I cant help it. I have an appointment soon to check my weight and i havent gained any. I physically cannot gain any and I dont want to be put on medication. She already sent me to therapy and I dont want any of it anymore. I have enough appointments as is.