Thanks for the query to H.C.M. Forum.
Mild bleeding is a common side effect of cerclage.
This is a most successful method for control of miscarriage
As you stated that there was bowel movement so need not to worry .
Keep one thing in mind don't take undue strain .
Cerclage ( cervicsal tracheplasty is now a day most popular for mildly opened cervix
in pregnant lady, so carry on.
Good luck. Dr. HET