I continue to shed and have some more questions

How long after a hair has been shed should you see the regrowth come through? Is telogen effluvium common in men or is it nearly always MPB? Is fin useful to prevent hair shedding?

Some simple answers: (1) telegen effluvium is rare in men, (2) young men with hair loss usually have male pattern balding and (3) finasteride is not useful in telogen effluvium. Please, for your future hair health and looks, seen a competent expert in the hair field.