Our urologist said to leave the area completely free of anything....
Expect mucus to appear on the tip of the penis... This is normal and should not be removed....people have a tendency to wipe the mucus away. If the mucus is removed...it will cause the area to become dry and cause irritation.
If this isn't the case.... call your pharmacist and see if there's anything s(he) can give you for relief
You may have a urinary infection that will need antibiotics.... this is very common with a catheter.
So - don't wait to have this checked. You don't need to be in pain!!!
Take care and let us know how you're doing.....