I am only 18 and a female... Over the years I have had many problems... I have accumulated sits, bad acne, and more recent rapid weight gain. I eat very little. I drink allot of liquid. I feel hungry all the time like my stomach gets upset because it is hungry, all I got to do is take a bit of something then its satisfied. I am tired now more than I have ever been and go to the restroom more than what I am supposed too. Please tell me what’s wrong. I might be just crazy. But I have gained at least 10-20 lbs. in the last 2 weeks. And I don't eat barley any thing. Please help me...

~don't know what to do~

It honestly could be a number of things. How long have you been struggling with the acne. Is there a chance that you could be pregnant? We can start from there.

10-20 lbs in two weeks is an extreme amount. There is more to this. When was the last time you went to your doctor?

Exercise. Exercise. Exercise. Live a healthy like. Plan to eat well for two weeks. All these suddenly so bad problems will disappear. Just run for 30 minutes one day and see how you feel.

You really need to see a doctor ASAP. This could be diabetes or thyroid problems. There is something called a diabetic comma you really need to get checked out. Also do not starve yourself.

Gaining 10 -20 lbs in two weeks sounds like your retaining fluids.
It could be due to a number of things.
For you to feel better soon, please see your doctor so that he can diagnose and treat.
Best wishes

Akae true my son has a kidney disease and one of his symptoms was rapid weight gain.

Thyroid or diabetes was exactly what I was thinking as well, It is never good to gain that much so rapidly, it isn't just eating too much or not excersizing, it is an underlying problem. Please see your doctor.

You really need to see either a family doctor or a GYN. Please make an appointment to get in within the next week.

Start writing down your symptoms along with when you experienced them so that your doctor can have all the information in front of him/her when you go. GL!

Also, when you do eat - make sure that you are eating healthy food. Not junk.
Start taking a vitamin to ensure that you are getting the nutrients your body may be lacking.
I agree that you need to see a doctor. The first thing that popped into my head, like said above, was thyroid issues.
Also, you can see a dermatologist for the acne. The issues may or may not be related.
Good Luck and keep us posted.