I struggled to get pregnant and did the same thing. I wanted to hit pregnant women when I saw them becuase they had what I so despreately wanted. I cried when I saw car seats in restaurants and wanted to carry the babies away and take them home. My sis was pregnant at the time and sometimes I had a hard time even talking to her about my niece to be. I think is all normal, esp with the change in and out of hormones. You might bring up to your dr and see what they suggest.
I am very sorry for your loss and wish you all the best.