venting out!!

Pavi
I cant enjoy other good things happening in my life coz of this. Everytime something good happens, first thing that crosses my mind is "would have been better if i am pregnant now".  We got a new house last month and my husband was soo excited and happy. 
I was the one who always insisted on buying a new house and now i cant enjoy it.. i feel like a failure though i have everything else in life..
Anybody else feel the same way ?? I am 26 going to turn 27 nxt month. Husband is 29. Ttc for 15 months. No issues with both of us!!