Losing hair at the temples, am I going bald? My father and my paternal grandfather are bald. Maternal grandfather is not (Photo)

Okay, so, where do I begin... Recently, I've been having a lot of stress after losing someone I love/loved 5 months ago. I started to see a lot of hair falling out from my head, especially if not washed. My hair has also gone through heat damage (flat iron) and hair dyeing. And, I decided to cut my hair because it was really damaged. (Short hair doesn't suit me) And the shock after I saw my hairline/temples... My hair stylist told me that it's fine and that cowlick is to blame....