I've had this issue for years. It used to be just regarding romance and my emotions towards others, but now it's about pretty much everything. My dad also had this problem. He's a very unexpressive person. My mother, however, is extremely expressive. Which makes me a weird combination of highly self-expressive and eccentric but unable to describe any of it with words or even identify it for myself.
Topic: 142 on the Questionnaire and I'm Only 17
maybe you are a person who manages to identify and express yourself sometimes, but not as good as people without alexithymia traits at all, which would not exclude yourself from having alexithymia I guess.
I am 17 and scored 135. I have no emotions for most of the time.