I'm 22 and this will be our second baby. I don't see my friends as much as I did but I do see them still and when we see each other it's like nothing has changed but I have extra cute stories to tell them. There have been times when we've all been busy and I haven't seen them for a few months but good friends you always go back to and we keep in contact over fb.
Most of them are at uni and go out clubbing. I join them for birthdays if I can organise it but mostly they will visit me at my house (I don't have my license yet).
I have a new set of friends too that are mums so I can talk to them about all the "baby" stuff and listen to my younger friends talk about movies/travel etc.