Yeah it sucks. I was only a few hours away from my husband (bf at the time) over the summer between semesters. But neither of us had a car so we couldn't visit each other, all we had was the phone. It was 3 months with out him. Then for that next semester we were an hour and a half apart, I had a car but classes and a job so we saw each other maybe once a month. Then the semester after that I had classes, 2 jobs and no car, he had a car then, so it was still maybe once a month. I hated it. It was depressing and numb is a great word. I lived for the time I would get to see him.
Now that we are married and have been living together/married for over 3 years there are times I almost wish that he'd go away for a week or two. Sometimes you just need a break and then it's that exhilirating experience all over again. But I wouldn't want to be apart for longer than that cause LDRs do indeed suck. Knowing that you will only get to see that person for a few days and then spend weeks without them again isn't a great feeling.
Chin up. Time will pass by faster than you think. I know it doesn't seem like it and I can say that since I'm not there, but it will.