Is it wrong?

Is it wrong to not want to ttc anymore this year? My cousin who I kind of have always been in comparison with since I was younger just found out she's pregnant. She's 20 years old and I'll be 23 next week. She graduates in 2 years from college and I graduate now in may. I'm just so hurt because I always thought I would be the first one to have a baby. Now I'm bummed about it and actually jealous. I'm also jealous cuz they tried for a baby. It wasn't an accident. I feel like a horrible person. I am trying to be happy for them but honestly I'm just hurt.