NSFW: Does this sound like I might be a late bloomer?

Is it unusual for a person to masturbate for the first time at 17–18 years old? And is that considered to be a “late bloomer”?

Also, throughout highschool I never felt angsty or weird, so I thought I skipped the awkward teenage phase. But I actually had that phase in my early 20’s. And now at 26 I feel like I’ve finally gotten over the “am I Straight, bi, or gay?” phase. How unusual is this for a 26 year old male?