Is it normal?

So today has been a long day....

I get out of work we go to my mother in laws house and my sister in law arrives next thing you know she tells us she’s pregnant. I’m happy for her. I miscarried 2 months ago and when she told us she was pregnant I broke down in tears obviously I was not going to ruin her moment of happyness I told her I was crying of excitement. Is it normal for me to have felt that way? I’m not jealous I’m just sad I couldn’t keep my baby her face was full of excitement...