Rob,
Have a great time in DC, what an experience!
I think what you are feeling is normal and it just takes time. Of course dating is difficult, it just drives home that your M is over. You can't expect to feel comfortable right away. But do keep trying, it will get easier. Hey, and you can't expect to find someone special right away. All the duds will bring you one step closer to finding the right one. IMO it will be much easier when you are moved and settled.I think it will help you ease into your new life.