Long Hair, Am I Balding?

Hello,

The back of my head I am wondering if it really is a issue or is just a cowlick. I am 24 years old with very curly hair. My mom’s brothers and dad all had a full head of hair, my dad was completely bald and so was his dad. I Attachment 66044Attachment 66045Attachment 66046Attachment 66047Attachment 66048Attachment 66049Attachment 66050have a natural occurring widows peak and a lot of wave in my hair. I haven’t had my hair cut in three years and keep it up most
Of the time. The image with me in the light blue shirt is from four years ago, the black and grey one is from three. The back of head images are a mix of hair slightly wet and completely dry that are current. Let me know what you think, I have recently scheduled a hair cut appointment and setting up one with a dermatologist, but don’t want to waste the dermatologist’s time and my money. Let me know what you think.