I'm in a long distance relationship and my girlfriend doesn't call me any more. What should I do?

We've been friends since January 2007 and recently decided to be together in August 2008. She lives in New York and I live in Louisiana. I haven't seen her since May. I with her 3 days ago but we haven't had a real conversation in about 2 weeks. I love her so much I would never want us to be apart. I cannot see myself with anyone but her. We used to talk all day everyday now I rarely even hear from her. Her mom says she's been acting like that towards everyone so I shouldn't feel singled out. It's stressing me out that the love of my life doesn't call me and speak or anything. I can't even sleep at night because my heart tends to hurt (literally) from thinking about her. I had two dreams back to back about us last night. I would really appreciate some advice on my relationship and how to relieve stress.
I'm in a long distance relationship and my girlfriend doesn't call me any more. What should I do?
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