Taking a look at your poo before you flush can give lots of insight as to your current digestive health. If it's not optimal, contact a Holistic Health Care provider in your area for an assessment. It's your choice, looking before flushing can benefit your health.
The Bristol Poo Chart, shows pictures of what your "POO" might look like. It's a great guide and can be found anywhere on the internet. In summary,
Types 1, 2 and 3 = hard or impacted
Type 4 and 5 = normal or optimal
Type 6 = loose stool, subnormal
Type 7 = diarrhea.
Oh, and 1 more thing, pooing once every few days is not optimal. Healthy people go to the bathroom at least once a day, ideally 2-3.