Just feeling a little sad

My husband and I started trying at around the same time as some good friends of ours. They came over last night and had big news - she's pregnant! It's amazing and I'm so thrilled for them - but it's hard not to feel envious. We have not been having much luck, and they were only kind of "half" trying. 
​Just wanted a place to vent. I feel like I'm seeing pregnancy everywhere but with me.