Big hugs for all the suffering. Being apart SUCKS and you have a lot of people here who understand exactly what you are going through.
Six and a half years into marriage, it is easy to look back and smile knowing I survived all the being apart, but going through it felt like a daily struggle. As Jennie said, staying busy and finding what you can to cheer you up, along with talking to friends and family (or people on here who know exactly how it feels) is the best way to cope. Talk as often as you can afford on the phone without spending a lot that can be saved for a ticket (or use Skype cos it is free), and keep in contact online daily or a few short notes a day. Making plans for the future keeps you focused on what you want, and helps you to feel you are getting closer to being together. Continue being you and nurturing relationships with family and friends. You'll need those relationships more than you might imagine once you are here. As desperate as I was to get here, I still can't believe just how much I miss everyone back home, and being able to talk to family and friends really helps. In my case, hubby moved to the States for the first five years of marriage, so he understands how it feels to be away from everyone and everything familiar.
There is nothing wrong with crying when you need to, as long as you cry and get back to planning for being together. At first I found myself wallowing in my 'I miss him' thoughts when we had to be apart, and found it made me more miserable. Once I was able to get to where I was being more positive about planning for the future I could miss him but cope knowing we were getting closer to being together.