1vs 2 kids

I feel uncertain of having 1 or 2 kids and would like to see your experiences/advice.

Im 29 and Hubby 31. We have a 5year old girl.

Were planning our wedding for october and trip in January. I feel like we want to make our decision after wedding. I feel like theres pressure from others that expect 2 kids.But at the same time we are comfortable right now and financially stable, we both get overwhelmed easy and love our alone and free time. I am excited to start traveling.

I have anxiety and im on escitalopram 20mg and feel stable. Im scared to go off my medication to get pregnant and be super anxious. The main reason to have a second would be so my daughter can have a sibling and not be lonely. My friends are pregnant/had their second babys and i feel like one day im in a complete baby fever and the next im not so sure anymore. I know this is totally our decision but i just want to put this out there to see if others are in a similar place?