Just need to vent...

Hello!!

I am a 21 year old single mother to a little boy who is 3. Just found out mid July, I'm expecting another bundle of joy... Things are much different from my first child because this baby's father will be in the picture. I didn't want to tell my mom because I know how she is, and I seriously wanted to get confirmation before telling her, and I was scared. I work full time, go to school, plan on moving out in two weeks. My baby's father is extremely supportive and plans on being there.... My mom was going through my room and found my pregnancy confirmation papers. All hell broke loose as I expected, let her know that we ( baby's father & I ) had a plan and we are owning up to our responsibility... Well she says she isn't going to tell anybody because it's not their business, but mentions the fact she isn't ashamed of me... I honestly felt like if you aren't ashamed why is that something you should bring up? I've always felt like she never gave me the chance to be a mom to my oldest son, so I want this to be my pregnancy, and I can tell who I want to tell.... I work hard everyday, to get a college education and to support my son... So what is there to be ashamed of?? This has been on my mind all week, and I've always felt like she never really supported me... I did cheer leading and she barely came to anything I asked, but whenever I get paid she always asks for money, and she's an assistant principal, making way more money than I... Sorry so long, I just needed to get this off my chest. I don't really have any friends except my baby's father so I thought I would just vent here... Am I over exaggerating or what ?