I'm I selfish

Okay so I tecentally found out I was pregnant and my SO want me to get an abortion and I'm torn in between keeping it and aborting it . We are both 20 hrs about to be 21 , he told me he's adopting his 14 year old cousin and I'm kinda sad bc he doesn't want to take care of his own kid but I kinda understand it's only for 4 years until she graduates but I'm still really sad he thinks we are not ready for a kid but he adopting one and I know I can get my shot together in 9 months