How long did you wait to have another baby?

I just had my first nearly two months ago, and I may just feel this way because he’s so adorable and I love him so much, but I already want another. Eventually I plan to have a ton, but I’m just not sure on the spacing. I know it’s generally recommended to wait at least a year/more, but I’m curious on if it really makes a difference physically. Have any of you had kids closer together, and how did pregnancy and birth feel that second time around compared to the first? Was it more exhausting because you were also caring for a baby, or do you think your body just genuinely wasn’t ready to go through pregnancy again? Were there any complications related to getting pregnant again so soon?