20 yrs old hair losing hair quick!

[Gsm1005]

Okay so I'm 20 years old and I started on finasteride 3 weeks ago about 4 or 5 months ago my hair did not show recession at all to people then all the sudden it started shedding like crazy and go me it's way more noticeable I shed so much ecspecailly in the last few weeks and it bothers me a ton what I guess I'm asking is do you think Finasteride could get me back where I was or do you think the odds are slim?