There's a tea made by Traditional Medicinals called Smooth Move. It is a herbal stimulant laxative.
I am not a pharmacist, you may want to check for any drug interactions.
It works best if you prepare it according to directions, use boiling water over the tea bag, let the cup of tea steep, covered for 10-15 minutes, squeeze remaining liquid out of the tea bag into your cup.
It worked really well for me.
Good luck with everything!