? I think I have a thyroid condition that's causing hair shedding………….?

I think that’s it…My hair grows like water and is in good condition, I had a little over an inch cut a week ago and the stylist made several comments on the condition of my hair but it’s shedding and has been doing so for over a year…I don’t see what else it could be this isn’t typical in my blood line, I was born with thick hair and even my Grandmother has thick hair still…What do you’ll think…have you ever been through this and found out the reason for shedding…what can cause shedding please list some things before i go make an appointment…has anyone ever discovered that they had a thyroid condition causing shedding?