27 and pregnant

I will be 28 when I have this baby. I’m super nervous and excited and overwhelmed and happy and anxious but for some reason I feel like 28 is too young to have a baby lol. I know it’s technically considered a great age but I think it’s because I’m so shocked and dumbfounded that I just can’t imagine it. I’m excited and this is what I wanted but I’m still shocked. I feel like I still wanted to do some things first and spend time with myself more and enjoy my freedom a little more. I feel guilty for feeling this way. Is this normal?