What should I look for?

Hi, I (19m) am concerned I might have Klinefelter Syndrome but I think maybe I'm just being neurotic. So, I wanted to ask here what symptoms you had, or things you noticed that made you decide to seek medical diagnosis. Also, I was hoping some of you could clarify some questions I have about common symptoms, as google doesn't provide much detail and every source I can find just says "good to doctor."

1. Less Body Hair - Does this mean specifically the upper body, or any pubic hair? I have armpit hair and a little bit of chest hair, as well as hair on my stomach down.

2. Less Facial Hair - I see this one a lot too, sometimes it's just beard hair and other time it's facial hair. I grow a mustache, but no sideburns and only a few beard hairs on my chin.

3. Small Testicles - How small? I've never thought they were huge or anything but I don't really have an idea of what "normal" should be.

4. Taller - I'm around 5'9, not very tall at all. Is this something that is consistent with everyone who has Klinefelter or is it possible to have it and not be tall.

Thank you everyone for reading, I'm sorry if this is a lot. I know I should probably just go to a doctor and get my blood tested to be 100% sure, but I'd prefer to avoid it if I can and ai figured this was the best place to ask my questions. If it's a problem, please let me know.