Rows of Scalp and Thin Hairs

[JSmyth]

I was curious about whether or not I am possibly thinning. At a glance I have a full head of hair with about NW2 hairline. However when I use paste to spike my hair I notice that I can make 'rows' of scalp all over, going both horizontal and vertical. I can also see my scalp a little bit through my hairline and have thin hairs at the front which flop over. The issue is that I am unsure whether or not my hair has always been like this or does this sound like diffuse thinning/MPB.
Thanks a lot for your help, means a lot!

[jman91]

if i was you I would post a couple of photos of you head and scalp from different angles, its tricky for anyone to say otherwise.

[JSmyth]

Here are some photos:
















I have been on minoxidil 5% for 3 months as of April 17th, does it look like new hair is growing in or does it look like I am balding. Thanks again for your time I am just very nervous about the future as I am only 21

[JSmyth]

If the pictures didn't show up please go here

http://imageshack.us/homepage/?user=dielawn8787

thank you