Feeling Alone

So about a week ago I found out my best friend is pregnant, and I'm so happy for her! We have both be struggling to get pregnant for over 2 years and it was wonderful to have someone to go through it with and not be so alone. I know she still understands, buts it's different now. I don't want to tell her that i feel this way because I don't want it to cause her any stress or for her to feel bad. And I really am so happy for her, she is like a sister to me and I already love her baby like family! I couldn't stop smiling and being overjoyed for about a week, but today I'm sad I'm not pregnant and I feel like I don't have anyone to talk to about it right now.