Don't want my dads family around my baby

Let me start out by saying, my dad molested my cousin and I at a very young age, I've forgiven him, but I can't forget what happened. I recently found out I was pregnant and told my brother, and I guess he told my dad, because my dad and stepmom showed up at my job crying about how excited they were to be grandparents and it made me really uncomfortable. I don't want my kid to be around them, I can't help but feel like I don't want them to be around my kid. When they showed up at my job, I felt sick. Then, they posted about it on facebook saying how excited they were, against my wishes not to tell anyone. But here is the BIG problem I have, they called my boyfriend because I wouldn't answer my phone telling him I needed to answer their calls because my dad was having anxiety attacks because he was worried I wouldn't be able see the baby when it got here. I don't know why I'm rambling on here, my blood is just boiling, they have texted me over 25 times today. I can't deal with them anymore.