Welcome and congrats!
To me age is just a number, i feel that its all about the individual. At 17 i was paying my way and looking after myself, at 18 i brought a house with my OH and have never looked back since. However i know some people who are 19/20 and still not supporting themselves!. Everyone is different, so don't worry about your age.
With regards to your desition on having an abortion or keeping your baby, I urge you to do what YOU want and not what others want you to do, as you will only hold it against them in the future.
I wish you all the best,
xXx