Strong urges

The last two days I’ve gotten this strong urge to try for another baby or get a 2nd dog. I already have 2 children. They’re perfect in every way. They’re almost 2 and 4. I have a 4 year old dog and I looked at puppies today. What is wrong with me? I just got done ovulating and I wasn’t really in the mood so I don’t think it’s that causing it. It’s not ideal to have another baby and we both agreed we’re content but like why am I feeling this way? So suddenly? The urge is strong. Like I feel like if I don’t have either or soon I’m gonna implode. I know it’s obviously deeper than wanting something new. I know better than to make a life long commitment due to a temporary feeling so I know I’m not going to make this big decision today or this week or this month even. I’m just so confused as to why I’m feeling this way.