not excited

Any moms to be just not excited? I am so nervous and feeling so overwhelmed with expecting a baby in December! Is this normal? I feel so bad feeling this way because a baby is a blessing from the Lord and I know he allowed me and my husband to conceive. We have only been married 3 months. Guess I'm feeling so selfish lately! It's my first baby btw. No mean commEnts please I'm really struggling