Thanks so much for the info, Raphael. I'll shoot you a pm later on and get those links off you if you don't mind! I live in Scotland so I should be able to use them.
Also, I took some new photos. I gave myself a buzz cut to have a better look. Without the flash the thinning doesn't look too bad. But with the flash, it's exposing a lot of scalp and it looks really thin and shows more detail. My hairline doesn't look as bad when it's short, ironically. I think the my long fringe made my hairline look like it was receding worse. Weird!
But I took a profile photo as well with flash and it exposes a lot of my scalp from the side, too. I don't know if I just have thin hair everywhere.
Really confused.