Am I balding? M17

I don't have significant hair shedding. My maternal grandfather started balding in his late 20s and was a Norwood 5 in his mid 30s which he maintained till his 50s..my father has a head full of hair but my paternal grandfather went bald in his 30s with a pattern similar to my maternal grandfather. I have recently noticed that my
temples have receded. Could this be MPB?