I don't understand why you think the meatus is thin skin. It is the "eye" of the ****, so to speak, you have flesh there, so no thin skin.
Thin skin is the foresking, and topical cremes like the one you use are also used for this. Steroids will give issues to thin skin if used for a long period.
You seem a bit anxious, expecting for medication to work on the first application. Please keep using it for 5 days and see if it gets better.