18 and unsure if this is my normal hairline or signs of balding.

[RhyGuy]

I've looked at pictures that were taken years ago and my hairline was a little lower but still somewhat high. Please let me know. My dad went bald in his 20s and my mother's dad showed signs of balding in his 30s/40s. I'm not too worried about a receding hairline in my 30s onward. But I would like to live my 20s with a full head of hair.

(Current Day)

(Years Ago)

(2015)

I found the this picture on Google images lol.