For you being 19 years old, yes this is quite aggressive hairloss. But, it seems not to bother you too much? Anyway, that's how it appears to me.
I wouldn't do surgery if I was you. At least, not yet. Surgery only works if you expect no future hairloss. And seeing you seem to have a quite aggressive pattern, I'd say jump on the medications first. Just finasteride or dutasteride to halt the DHT hormone, which should halt your hairloss greatly and even regrows hair.
So give the meds a chance, and consider a transplant when your sure you've stopped all hairloss. Generally, they say the minimum age is 25. I really want or wanted a transplant done as well, but I think I'll just wait untill I hit the 2 year mark with my current regime, or try some other stuff in the meanwhile.
Besides, surgery doesn't create
more hair, it just equally devides it. Meds however,
do create new hair.
So it's a win-win situation for both your hair and your money to wait.