Single Moms to be?

First, I'd like to start off by saying that nobody should pass judgement on each other in this thread, but instead just support each other.

Unfortunately sometimes it is better for a woman and her child to live their lives without the father of the child involved.

I, myself, am under the suspicion that I might be pregnant, but I'm not sure that I want to involve the father.

It's a very tough spot to be in, but I know how he would feel. He would tell me to get an abortion or else he and his family will resent me forever.

I'm not asking for relationship advice. Instead, I'm wondering how many women have found themselves choosing to raise a baby on their own. How did you tell your family? When did you announce to the rest of the world? How do you field questions about the father?

My biggest fear is that my mom will be disappointed in me. I can handle everyone else. I'm an adult with a full-time career, so I'm not helpless. People with less money/resources have done well on their own. I'm just ultimately deciding between involving the father, and causing so much heart ache, or doing it on my own. I'm not afraid to be a single mom, but I am afraid that she might think I'm stupid, irresponsible, etc. I promise I'm not. I just have no idea how to navigate this right now.