Consider natural family planning. It can be very effective
if a good method is used and it's followed very carefully.
See the Primer I co-authored -- it's linked
from my home page somewhere

http://www.ncf.ca/~an588

NFP during breastfeeding can be very effective;
it takes advantage of natural decrease of fertility
during breastfeeding. Has to be done right, though.

"KR" ) writes:
What type of birth control are all you breastfeeding moms using?

My daughter is 2 months old now, my doctor mentioned the options of the
mirena IUD or micronor (a mini pill). We aren't ready to make a
permanent decision right now and I really don't want another child at
this point. What is most effective? What is easier with less
problems??

We will probably know in about 2 years if we will have another child at
which point we will look at a surgical option for one of us.

Thanks,
KR