Did you use condoms when you stopped taking your pills?

having gone through an abortion and knowing how your grandmother felt about you becoming pregnant again, why would you not protect yourself?
I think you should tell her as soon as possible. If she's unwilling to help you raise a baby, you need to know, so you can get your resources together. 9 months might sound like a long time, but it's really not. You need a stable place to raise your baby, and from the sound of things, your mom won't do and your grandmother might not be willing. If you want to keep this baby, the clock is ticking.