Andrea,
If your boyfriend cares about you he would take responsibility for his actions and be there for you and for the baby. It takes two people to make a baby and he is as much responsible as you are. I understand that you feel that you don't want to lose your boyfriend, but you deserve to be treated better. If he is threatining to leave you and forcing you to have an abortion that you do not want to have, then you deserve much better. Please don't let your boyfriend or anyone else force you into an abortion you do not want. If you have already come to love the child developing inside you, then I would encourage you to cancel the appointment you made and give it life. Perhaps adoption could be an option if you both are not ready for parenthood yet. If your boyfriend can't accept your decision to have the baby and gives you a hard time than you deserve better...how can you trust him for love and support in the future? Hopefully your boyfriend will come around and support you and the baby.
Kate