My best friend's baby shower was yesterday....

Is it wrong to feel upset and depressed at my best friend's baby shower? I went yesterday, and I had brought two gifts that i had bought. And I also gave her an outfit that was supposed to be my baby's, but I had a chemical pregnancy in June... My husband and I are still ttc baby # 2, and I'm not sure if i should be mad at myself for feeling this way. We've been best friends for 10 years and she is having a baby girl with my husband's brother, and they're engaged. I guess i feel pissed and sad and depressed because my husband and i have been trying for baby #2 for so long on and off (giving ourselves a break from ttc after 4 months or so with no luck, then trying again), and my best friend and her boyfriend (my husband's brother) got pregnant so quickly, ,and they were huge crack heads before they found out they were pregnant. Matter of fact, they smoked crack for the last time AFTER they found out!!! I just got so angry and depressed at her baby shower yesterday.

Is it wrong for me to be feeling this way???