Someone to Talk to....

I feel like I have nobody to talk to... My sister gossips about things I talk to her about like guy problems and that which really hurts me... I found texts about me being in 'one of my moods' to a guy shes friends with.... My parents I cant talk to because they just expect results from my illness.. Type 1 diabetes by the way is what I have... And they are so occupied with everything in their lives... They say I must come talk to them but they don't listen when I do go and speak to them.... I'm trying to deal with the little things that bother me but its hard.... Any suggestions?