What should I weigh?

I'm about 5'11 and female..I don't know if age matters or not, but how much should I weigh? I'm very confused, nothing's accurate. Some things say I'm fine and some underweight. I need the most accurate thing I can find. And I can't go to a doctor...

because they'll put me in counseling or a hospital and I don't need that in my life. Thanks!
~emily

if you think they might put you in a hospital your probably underweight...

I got 132.4lb - 178.2lb for your healthy weight range.
it's high cause you're tall.

They wont hospitalize you unless you have an actual problem with eating. They might give you a food plan though.