Recently turned 15 and worried about balding

[worried2568]

Alright, first things first, I style my hair into a fauxhawk, and what I'm about to describe has been going on for 3 months now.

When my hair is down, and not styled or spiked, I see ZERO scalp. Even when it
is wet, I see next to no scalp. I have ZERO thinning at the crown, and no hair line receding.

Sounds good right? Wrong. For 3 months, I've been experiencing hair loss. It started out terrible. It was so bad that, when I'd be eating, hair would normally fall out into and around my food. After I decided to cut my hair to about 1 inch fauxhawk, I haven't been noticing any "random" hair loss, but I still wake up with around 15 hairs on my bed.

Now, I recently moved to a new home, and now, I spike my hair in a bathroom with overhead lighting. Whenever I spike my hair in there, I notice that I can see my scalp only at the front, and only when there is overhead lighting. If there isn't overhead lighting, then it looks like I have a extremely thick hair at the front.

Does this mean I'm balding? I looked in previous pictures of myself where overhead lighting was present, and I can see SOME scalp in those pictures. They aren't high quality pictures, so I can't tell if scalp is showing in other places in the front of my hair. I can't tell you if the overhead lighting has been showing my scalp for a really long time, since I recently started styling in that new bathroom...

Here's some information about genetics:
Dad: Very small thinning in the crown, he is 46
Mom: Full Head of Hair
Dad Sides Grandpa: 75 and started thinning at 70
Mom's sides grandpa: 80 and nearly full head of hair

Also, I have a 7 year old brother. He too suffers from scalp being shown in overhead lighted areas (I tried styling his hair like mine. Same results)
My 18 year old brother has ALOT of hair fall, but he shows no signs of hair loss. Every morning, he takes he's bed sheets and shakes them over a tub to let all the hairs fall out from them, and normally 50+ hairs fall out in total!

What do you guys think? Maybe it's seasonal shedding?