Ok. So, I'm 18, but I haven't gained any height since I was 15, and I've lost about five pounds since I was 16

...and now I'm 5'0 and 78 pounds. My BMI is 15 (so I wouldn't be able to model in Spain! lol) Is there an issue because I haven't grown in so long and have lost weight? Also, my period is totally irregular and sometimes comes monthly but sometimes comes once every four months? What's wrong?Ok. So, I'm 18, but I haven't gained any height since I was 15, and I've lost about five pounds since I was 16
You need to see the doctor for a complete checkup including bloodwork.
The doctor needs to find out what the problem is to help you.
It sounds to me like it could be your thyroid, but get yourself checked to find out.
Girls stop growing tall at a young age.
i'm 21 and only weigh about 100lbs and havent gained weight in a couple years some women are just like that but i must say im about your height(5'1) and i'm pretty skinny so 78lbs isnt healthy which is probably why your period is out of whack...you should see a doctor to help you gain some lbs.
some how I don't think you told us all the info. You need to look at your lifestyle. How you eat ect. ect.
I would definately go to the doctor and tell him this because that is really underweight. I am 5'0 and i weight 95 pounds but im 13!
you could just be dieting wrong but still, go see a doctor.
Not to freak you out or anything but..yeah.
Hope that helps
:]]
eat something!!!
this will make your period more regular
see a nutritionist. some people have incredibly fast metabolisms... but if you keep losing weight something else could be wrong... see a doctor