In need of some advice

Haley • Hello I`m 20 and mommy to mavis 🎀
I'm gonna be a new mom in June I'm nervous because I really wanted to take the childbirth preparation classes but they are full or super expensive and I'm nervous that I won't be able to take them. What are my chances if I don't take them will I be really bad during delivery or would I be okay ? Just really nervous and scared and I'm trying to find a class to take but it's stressing me out. Please help me :/