Im 12 years old and I weight only 77 pounds im 5"1

Please help me. I'm too skinny. I eat and my mom says im fine, but everyone calls me anorexic and skinny and stuff. I didnt get my period yet, but I have this white discharge for about 6-8 months.
What should I do? :)

Hey don't worry I'm going through the same thing I'm 15 4'6 and 70"pounds...I know how u feel I got my period at age 14... I was worried when I didn't get mine 2 but ur fine its just the way were made but be happy wit ur body:) I think guys find short girls attractive :)

I wish I was like y'all I cry every day because of my weight I weigh 91 lbs 4 11 wish I coicoiuld loss more but it doesn't comes as easy 😢😢😢