manco

Alright, so 19 year old guy here, and i noticed some thinning along the sides of my hair, and a little in behind the bangs. I went to my doctor, he prescribed some propecia, and this is where it starts to get weird. I had one pill the first day, then I had to work the graveyard shift at work till 5 in the morning, and then when i came home i slept till 1. When i woke up, i popped another pill, and went to comb my hair. As i was combing it, i noticed that I had regrown hair on the sides, where it had been before thinning. By that i mean, i used to have two white stripes from my temple to the back of my head. Now, they are gone. I have hair there. AM i a friggin miracle child? Is it going to fall out? is this something that happens? I mean, jesus, ONE NIGHT and all of the sudden I have hair regrowth? I mean, of course, im over the moon elated and estatic that it has regrown, but has anybody ever heard of one night regrowth before? Thanks for any info guys