Is my hair thinning?

For like 2 years ive noticed my hair falling out more than usual then other times. I never payed much attention to it because I just thought it's something that would go back to normal. Fast forward to now and now I'm more nervous then usual about my hair and I see that I can see my scalp at this point. I've always could have seen my scalp but I feel like I could see it more now then 2 years ago. Am I actually losing hair or is it just my anxiety? I am pretty healthy I take my vitamins that are essential and do use good quality products for my hair. What could be the reason my hair thinning?