Here are your options (and I realize being pregnant is ******* with your head right now).
- Have the baby and don't go after the father. Raise the child yourself, and with very little money. I don't care what you said about being able to do it, yadda yadda yadda. You have no idea how much it will truly cost you financially and in terms of missed opportunities. Plus you have to be responsible 24/7 and you have essentially just admitted an utter lack of responsibility for your sex life. Do you honestly think you're going to be mature and capable enough to do this on your own with no assistance whatsoever? Step back and assess this a bit. It's money but it's also time. In the meantime, he's an asshole (yes, he is) and he gets off scot-free BECAUSE YOU WERE A DOORMAT AND YOU LET HIM.
- Have the baby and make him take responsibility for his actions. He will adapt, as people have for thousands (yes) of years. He may or may not be kicked out by his parents. He might stop smoking weed. He might actually become something of a father. Or he might fold and go down in flames. But you would not have to shoulder the whole thing by yourself, his parents might step in and help you, and he might even man up and at least pay something, even if it's court-ordered. Being responsible is a ton easier when you're not the only one who has to be the grownup. You both grow up, you both become mature and responsible. OR
- Have an abortion. The upside is you take charge of things and, while the experience will change you, so will having a child. The downside is that you don't seem to want one.
#2 and #3 are doable. #1 is a really untenable position to be in, and it's what he's pushing for in the absence of #3.
I'll repeat myself - he's an asshole. He's immature and irresponsible. Regardless of how you feel about children or unplanned pregnancies or abortion, his behavior is reprehensible.
In the meantime, yeah, the clock is tick, tick, ticking away. You have made this bed, and you need to lie in it, in one of these three ways.
I cannot tell you whether or not to get an abortion or have a child. And no one else should, particularly those of us who are not in it.
But what I can and will tell you is that option #1 stinks to high heavens and, regardless of what you decide between #2 and #3, please please please have some ******* self-respect and also some desire to do what's best for your child if you decide to have one and do NOT pick what's behind Door #1.