Freaking out a bit!

After learning yesterday that I am pregnant, I woke up this morning terrified! This is my first pregnancy where it isn't a miscarriage (so far) and the reality of all of it is hitting me hard! I'm just so worried about how much my body is going to change and all that. And I'm worried about telling my parents because they never agree with my decisions, especially lately, even tho I'm 22 and on my own with my boyfriend and we are doing good with our own place. I'm also worried about what if I'm not a good mom?! So many things running through my head :/ is this normal? Let me say that aside from all this freaking out I am happy about the baby. Lol.