I had a small tear (midwife called it a scratch!) after my first, took a few days not to hurt when I peed.
I was up and about and showing baby off the next day, despite a two day labour and failed epidural, left hospital at midnight 6 hours after delivery!
Sex after 3 weeks, felt fine but a bit loose the first time, DH reckons it takes that first time to make things spring back as after that it was fine! Couldn't wait any longer...
I was 20.
Recovered quickly after the next two as well, had to with toddlers to look after! The afterpains were a LOT worse after the third birth though, but not an issue with the first.
Helped that I was very laid back, had planned home births with all of them but only got one with the second. I found breastfeeding easy, probably because I never expected anything different. I just assumed my body was capable of all of it, so went with the flow and didn't stress about anything. I was very fortunate to have no complications.