Trying to hold it together

Feeling like such a selfish sister... this has been an emotional week for my husband and I as we have been ttc for 3 years and just started seeking out answers as to why. Thinks aren’t looking great for us. Waiting to get hubby into a urologist to see if we can bring up his levels up and tests also came back a little low for me. As it stands now doesn’t look good for us as far as conceiving naturally. We were interested in trying IUI method however if swimmers are no good IVF is our only option and far too expensive for us to consider.... husband and I are in the process of coming to terms with this dream possibly not being a reality for us...... and then BANG the text came today.....My sister and her husband of two months are expecting and wanted to share the news. I knew this was coming at some point but still wasn’t prepared. I am so happy for them but the pain of our own situation is still pretty fresh. I wish I could hide my emotions better so I don’t ruin this moment for her. I just feel terrible and selfish.