We have been married almost 7 years and have a 2 year old.  We have had our ups and downs over the last year and discussed we were not quite ready for a second.  I went off BC in February because of hormonal issues, but we are always "careful", however full well knowing that unprotected sex could always end in pregnancy.  However I have also had a lot of problems with sex drive, so we haven't been very active... At all.