So confused.

I can't get my head around it. I've been waiting and waiting for four years for my boyfriend to be ready for a baby and now he's finally ready I'm confused and scared. His mother went through his phone while it was unlocked and saw that we were talking about it. Now I feel pressured. She's been pointing out babies and how cute they are so we know she has been going through his phone.  Scared of being pregnant all of a sudden I was having butterflies from excitement  but now we are at the baby making stage I'm scared. I know I'm 100% ready. Is pregnancy and birth really that bad? And is it normal to feel this way?