From the SpeediCath "Man's guide to intermittent self-dilation": "There may be some resistance when the catheter reaches your stricture. If this happens apply gentle pressure and the catheter will slide through" So from this I would say, give it a little pressure, if you feel any pain or discomfort STOP! You could try gently turning the catheter to see if this helps, if not, try again the next day. If the stricture or "obstruction" still stops you from inserting the catheter after a couple of days call your gp or specialist.
Yes, the sphincters can be damaged. Also urinary catheters can introduce bacteria and lead to chronic bladder infections with incontinence. Have him checked first for UTI. A cystoscopy can show if there is a structural problem.
Forced marriage and early marriage are harmful. Marriage should be by freewill and not forced.
no
yes you should it is fun easy and keeps you in shape. define being forced and i will re edit this answer
By your heart pumping the blood through your veins.
Osmosis
no
It is all about the heart. If the person's heart is not in the right place, then it should not be forced. Thus no worship is better than forced.
All humans should have the right to determine their own fate/future. As a forced marriage takes away the right of self determination, it should not be allowed.
convection
No
The elimination of an ethnic group from society through killing or forced migration is usually defined as ETHNIC CLEANSINGor GENOCIDE.