I've had my hair this length for years now.
http://tinypic.com/r/35ipp1t/7
Same length & same style.
I dye my hair a lot and at the back of my hair I have a lot of breakage from over bleaching, so the length there is a little lower then my neck.
Since my hair is thin and really long, I have very little volume and a LOT of split ends.
My sister was a cosmetologist, for a few years, and suggested that I should get an A- line bob. It would be something new, would look great, and would be more healthy for my hair getting rid of the weight etc.
I've had this hair my whole life. It's like my security blanket. I really want to try something new but I'm so afraid I wont like the end result and miss my old length. Also the fact graduation is in a few weeks and prom is next week.
Here are more pictures of me:
This is most recent, btw:
http://tinypic.com/r/2ephr8x/7
http://tinypic.com/r/2whov7l/7
http://tinypic.com/r/3580u2f/7
So, I've come here to ask for help.

What's your opinion? Do you have any other suggestions for short/medium styles?
P.s sorry for the length of this.

your help is greatly appreciated. Thanks<3
ALSO:
I forgot to add, what do you think my face shape is? I tried looking it up but I really can't figure it out.
(in the pictures you cant see, but I have a 'widowspeak' on my forehead. Where the hair line goes like 'V'