One way relationships

Recently I have been noticing a pattern in my longest friends, they are my friends because I do whatever they want and when I stop being at they back and call, they disappear....

Yesterday I called a friend of mine, my oldest friend to complain to her about the fact that my thesis is going straight to hell... After talking for a while about my problem andt talking about an hour about hers , she told me that she got really annoyed that I called her early in the morning...and although I told her that I was feeling really bad and otherwise I would not have called , I ended up feeling that she considers my problems of less importance and that she is annoyed by my behaviour...she didn't used to be like this, she was understanding and there for me when I needed her and now I feel so alone, like I am a crazy drama queen that no one cares about