extreme hair loss

oh my goodness, light bulb just went on for me. About a month ago I lost sooooo much hair, so much that I had to start using a smaller ponytail for my hair. maybe it's because I fasted for 18 days in November. People often say you don't lose the hair when you are going through something, you lose it months after, so that's possibly what happened to me. I hate my hair now, makes me realize that I think I will do one more long fast, then never again.