Desperately need help! My hair is falling out and getting thinner and thinner! What do i do?

I normally go to a salon about every 5 weeks to get my hair colored (the kind without bleach) and the last time I was there I think my stylist over processed my hair. He seemed to put more solution on than normal and it was on my hair longer than normal, my scalp even felt tingley and had a slight burning sensation. I have been seeing the same sylist for atleast 10years and I felt uncomfortable saying anything. About 2 weeks later I noticed my hair was falling out at a very rapid pace and getting thinner and thinner!! Its been 4 months since I've gone back but my hair still seems tobe falling out. Will my hair follicles repair themselves? what can I do? I feel very self-conscious now because my hair is getting so thin and the color is a mix of blonde, gray, and dark blonde. My hair barely covers my ears on the sides! I realize certain factors can play a major roll in thinning hair such as menopause, genetics, etc. but why would this happen so sudden? What can I do? All help is much appreciated. Thank-you!