5th week seems like time enough to heal. You should contact your urologist with this information to be safe.
In the mean time to reduce the strain of bowel movements; maybe a stool sofener of some kind will help.
Diagnosed at age 60
PSA went from 2.2 to 3.8 in 14 months
2 of 14 cores positive at 10%
Gleason 6(3+3), negative DRE, neg. boundaries
DaVinci surgery on 02/23/06