Baby no peeing or pooping in a long time

The whole day she needed changed like 2-3 times. She is not puking, no fever, no sign anything at all is wrong. I looked up dehydration and UTI she doesn't have either symptoms so maybe she hasn't had enough liquids so I'm giving her water. I am taking her to her doctor in the morning. She's sleeping more than usual? I mean she had one nap today and slept a little longer, then went to bed at her regular time. She woke up crying for a bottle and drunk milk, now water. What could be wrong and has anybody ever had this happen? She's been a healthy baby so I'm just not sure. Could she just be not wanting to sit in dirty diapers at all? Maybe wanting to potty train already? If that's it it's weird bc that's a long time to go without peeing. Btw she's had some horrible farts where we literally thought she pooped. They were BAD. but no poo or nothing.