Every body is different, I've seen some women get to 2 years with nothing then there's me I got to 3 months and had a period. Just when your body decides to go again.
6 months still no sign
Had one 2 months pp was expecting it the next month but no show, now 4 months pp.
9 months when I returned to work.
I'm 12 months pp today and nothing has returned yet
I had one at 9weeks PP and then one at 5 months x