Jealous but more sad. Am I wrong?

I have been TTC our 3rd baby for almost a year now. One of my neighbors ended up pregnant. She didn't want the baby as it would be her fourth and she didn't know who the father was. She slept with 2 men in the same week with no protection and ended up pregnant. I didn't have hate for her but I was really depressed and upset with her. Especially because she wanted to abort the baby. I was so upset because I am trying and she wasn't and it just happened for her. Then another neighbor ended up pregnant... now I just found out my sister is 8 weeks pregnant. She didn't want another one. She doesn't have a job. No car. She just moved in with our mother and just got her other two kids back. She is going through a divorce. She has only been with this guy for a little over two months. I'm not saying she doesn't deserve this baby but I actually want one and can't get it.. I want to be happy for her so bad but I just make myself more upset... I'm trying with no luck. I have a happy and healthy relationship. We both have income. Both have cars. We have a house. I just don't understand. Am I wrong for being upset? It just seems unfair..

EDIT: I'm not saying my sister doesn't deserve a baby cause she has no job or car. I only brought that up for the fact she has no income or transportation. I do. I'm trying and she wasnt. I want a baby and she doesnt.Nobody said I'm entitled because I have those 2 things! Just to clarify!!