I feel terrible for feeling this way...

But my husband and I have been ttc for over 2 years, it's gotten to the point my husband is feeling less and less motivated to try anymore because he feels he's the problem. He won't get tested. I'm feeling like giving up. :(

This year especially has been hard, because my sister who has been ttc for a year is now pregnant. Not a week later that I got that news my sister in-law announced they are expecting also. Both of which have a due date on my birthday week. I am incredibly happy for both of them but part of me feels such anger. I hate that I feel this way.. but I'm hurt it may never happen for us and now I'll have a constant reminder of that on my birthday too. Don't get me wrong I'm so excited to spoil these babies that we're blessed to have in the family. Just need to know if anyone has word of wisdom ?