Looking for immediate help!! Is this why I'm losing hair?

[youngjosh]

For starters, let me tell my story. My hairline receded maybe a cm, so I was heavily concerned that I was balding at 17. This was roughly half a year ago, and since then I've been looking for any excuse to say "that's it, I'm going bald" so I could accept it. I realized my hair hasn't receded since then, and I've came to the conclusion my hairline has likely just matured at a young age... until evidence proves otherwise. ANYWAYS! My biggest issue has been the side of my head. I buzz the sides and back of my hair, and the right side seemed very very very slightly thin in one area afterwards when I buzzed it about 2 months ago. I've grown it out since then, until I got it buzzed once again today. I looked everywhere and EVERYTHING looks completely normal EXCEPT this spot. My left side is completely fine, but my right side is losing it. Below I will post pictures of my side just 2 months ago and now. It seems awfully weird that it's thinned that much in one area but nowhere else. My main concern though, the weird red circle that's in the middle of all of it!! Is this something I should have checked out? Is this likely the reason why I'm ONLY losing hair here? Please help immediately so I can solve this issue. Thank you very much!