Terminating parental rights!

Hi all, I’m 30 weeks preggo, when I found out I was pregnant. The father asked me not to trap him & his family with a baby they do not want. So I will be terminating his parental rights, as well as his parents grandparents rights too! Has anyone been through this? How did it work out? I know it may not happen but I’m still going to try(: any advice would be appreciated from anyone who has went through it. Also I have never spoken to his parents. I don’t want yo either.