Blood disorder or something else?

I have a question about my skin.. When usually you wear socks and you take them off there are usually small groves in the skin..As for me if i put small amount of pressure on anypart of my body i lean on or carry digs deep in my skin and usually its very painful . And it takes a while for my skin to fold back to normal but if i pinch my skin it has good elastic to it..sometimes i bruise easily also..the other day i had pain in my arm didnt bump it and got big bruise and my bones are sensetive also..My blood test norm to..like cbc and few others...any ideas?