After DS1 & DS2, we only used condoms when I was breastfeeding. This wasn't too inconvenient though, because we rarely had sex. Poor DH!
After I was done bfing DS1, I went back on the pill for a short time before we decided to TTC again. After I was done bfing DS2, I went on the pill for awhile, but then stopped and we just used condoms for a long time before I was ready to TTC again.
This time, I will be having my tubes tied, so no need to worry about other birth control (I hope!).