Okay, having experienced something similar, I can give some advice.
First, it will be lonely and hard to sleep for a bit. Forget it. Just do the best you can.
Now, plan for the future. The idea, in my mind, is to be the person I want to find. Like, I don't want to meet a lonely overweight girl in the suburbs, so I don't want to be that person. If I am that person, I do something about it.
So, what do you do? Seattle sounds like a great idea. (I'm a little biased on that subject though.) Question your ability to move before May. Often times you tell yourself you can't do anything, when really, if you try... you can.
Next, get ready for your move. Plan everything out, and in the meantime, you have time to work on yourself so that when you arrive in Seattle, you are in much better shape, emotionally and physically.
I definitely recommend physical exercise. It really does help clear your head. Try cycling or jogging for a half hour every day. Read books, and not just fiction! Maybe a little about art history, or color theory (for your web design), or philosophy. Learn to cook good foods, and make them for yourself. I recommend The Joy of Cooking by Irma S. Rombauer. Take weekend trips into the city, go see some rock shows. Maybe consider seeing a counselor so you can work out any issues that seem to big for you, or at least talk to family about it.
That way, when you arrive in your new place, you'll be happier, fitter, and ready to make a new change happen well.
Remember... be the person you want to find someday... and as important... never go back, EVER.
Lee Tom