According to various patient information guides I have seen, there should little restriction to sex when the stent is in place. Few patients experience discomfort during sexual activities. Occasionally, the side effects from the stent reduce sexual desire. If the thread from the stent comes through your urethra, sex can be difficult. Care should be taken so the stent isn't dislodged.
I would discuss this further with your personal physician before partaking in sexual activities with the stent in place.
Followup with your personal physician is essential.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
Thanks,
Kevin, M.D.