I was extremely underweight my whole life. I'm now 27 and am JUST NOW starting to gain weight.
Some people just have extremely high metabolisms. My mom drug me from doctor to doctor to doctor. I don't know why....she was as skinny as me!!! :-?
First of all, are you eating right? Although, I'm not one to talk. I constantly loaded up on junk food. You're not skipping meals are you? Have you ever made yourself throw up? If you're skipping meals or have ever caused yourself to throw up, then you need to seek help from a doctor. If you're doing stuff like that, they you have an eating disorder. One thing bothers me that you said: "anyone have any ideas on how i can get my weight up on the scale but not actually get fat?". If you're underweight, then getting fat should be the least of your concerns.
Being underweight can make your cycle messed up. I know there were times I'd skip a period and it was because I was underweight. But missing your period for 6 months doesn't sound right. How old were you when you had your first period? If you just recently started it, then they can be out of whack for up to a year. Stress plays a factor in it too.
You may just be like me and be extremely underweight. It will catch up with you one day. My mom was 95 lbs and 5' 7" when she was 40. She started packing on the pounds when she turned 45. And did she ever pack them on! She looks good though. She finally looks healthy. My weightgain was due to a medication I was recently on. But, I think it gave my body a kickstart because I am still continuing to slowly gain.
Well, now that I've rambled I'll go.
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