DH and I made the decision we`d like to TTC #2 shortly after #1 arrived (this was mainly due to our age, DH doesn`t want to be 50 and still having kids LOL and DH also has two boys who are 15 months apart).

I was exclusively breastfeeding Matthew on demand every 1 - 4 hours 24/7, AF arrived at 8 weeks post birth and I conceived when Matthew was 5.5 months, Matthew and Adrian are 15 months apart (Adrian was 2 weeks overdue).

After Adrian arrived again I was exclusively breastfeeding on demand, AF arrived 4.5 months after birth.

OB`s do perfer you to wait until after your 6 week appointment before TTC and it does depend on your recovery post birth as well.