Discouraged

It seems like everyone around me is having a baby and it's so depressing. My husband and I have been married for 3 years next month. I have had a few moments where I thought I was pregnant but in reality it was just stress making my period late. I just found out 2 more people in my life are having a child. I know at least 4 pregnant girls right now and at least 6 babys that were born in the last 9 months. I feel like we are trying and have no luck ever. I'm so depressed every time I get my period.