I'm your age and also recently married... I have felt the same way.
Also, I got a puppy. She pees every 1-2 hours and I wake up once in the middle of the night to her cry to go out and pee. I have to walk her every day. This one has a ton of energy. I have to get her to meet new people and dogs, get her socialized. I get few hours of sleep, but I nap during the day. If I was in school, or working, I wouldn't know what to do! We are so tired lol. I can tell she misses her family badly and I try to make her comfy, buy chew toys and train her not to play bite other people. She's going to obedience classes soon. Etc. Etc... BUT, she's wonderful, she makes me happy, I smile every day because of her.
I don't have children. I personally had intense baby fever. I know it won't be all about me anymore.. as people told me it will change your whole life and your body too and around $15k-$30k to deliver shocked me. Some things I didn't think about. I'm being honest. I would look around and friends and family are pregnant, my mom wants a grandchild. All that should not matter. It's for you and your husbands decision only to have a baby. I visit my aunt's sister-in law when I want a cute non-pooping instababy to smother so I can satisfy my cravings cause we all know that's not reality