K.H.
You can pump and freeze your breast milk to prepare for the time it takes for you to have this procedure and cover the feedings. I would be cautious on the laxative and ask your local pharmacists if this will impact your milk. They are very informative on such matters. Definitely wait on the post op time. I had a treatment while nursing and 24 hrs was enough time for the drug they used on me. You can ask the Dr what sedative he will be giving you and ask the Pharmacists too. I've had a colonoscopy too and it was a much needed test that isn't bad and much relief comes from the results. Hope all goes well with you and yours.