So lost

Anastasia • Trying to conceive baby #1 since April 2014
I now will be working with 2 people that are newly pregnant and my bestfriend is due the end of july, I'm so happy for all of them but it's so sad at the same time. I can't even picture myself getting pregnant or seeing a positive test for that matter. Trying to stay as positive as I can. How do you ladies deal with these situations?