unsure if i have early MPB or mature hairline

[hayes96]

so when I was around 20 I recognised that my hair had changed a bit it was very minimal change, but I started to worry this was MPB after doing a lot of research! I started checking my hair every day from that day, I'm now 22 and for the last 2 years my hair has not changed a bit, but in the last year I went to see 2 different hair specialists because I was so anxious every day about it getting worse.
the first hair specialist looked into my hair with a microscope thing and she said my hair was really thick up close, no sighs of miniaturization, or spaces or anything and said everything seems fine at the moment and then told me I was paranoid.

she did say my hairline changing could be just my hairline going from juvenile to adult,
I wasn't satisfied with the answer AND 6 MONTHS later I went to get a second opinion, the next hair specialist also said he didn't see anything wrong, I had a lot of hair, and there wasn't any sighs that would say mpb at this stage,

but I still feel like my sides feel thinner than they once were when I was like 19, and it really worries me, now my hair hasn't changed for the past 2 years since I noticed it change slightly at the sides any thoughts?