I'm so angry!

My husband and I have been ttc for a little while now. I am pretty sure there is something wrong on my end considering I only have a period every other month. I have made an appointment and will be figuring out what's wrong by August 23rd. I'm so frustrated because so many people I know have announced their pregnancy this year. My husbands cousin just had a baby and a cousin on my side did as well. There are 2 more cousins on myside that have also announced their pregnancy. My brother and his girlfriend are also having a baby. Now my younger brother is 16 years old while his girlfriend is 15. He has matured and proven that he can't take care of his family and I'm so proud of him for that. But my another one of my cousins announced today that she is expecting and I am so angry about it and upset! The father and her are on and off and she is 20 years old living with her parents, never been on he

r own, never had a job before, and never even entered a school building. She doesn't have a licences and the father is still in high school. I am so frustrated and upset that someone like me that is happily married and has her own job and own place (with her husband of course) is having difficulty getting pregnant but someone that can't support her self let alone a child accidently gets pregnant. End of rant!

I know I should trust the lord and hope for the best for her and myself but its so hard not to get upset and angry!