Answer:
Not in general. If it's for the mother's health you can have it up to 24 weeks. After that they have a chance to save the baby if it's born. If you are this far along you should speak to Planned Parenthood for instance that can help you with w/e you choose. Adoption might the way for you if you can't keep the baby.
Planned Parenthood: 1-800-230-PLAN or at www.plannedparenthood.org