It seems as if I am losing a lot more hair than usual, lately.....?

Everytime I shower I lose much more than I am used to. I'm almost afraid to brush it. When it breaks off it comes off from the root. Like it just slips out of the follicle with pressure. My hair, especially on the front sides of my head has also changed color and texture. It was always wavy but now it is downright curly and much more brittle. My hair is brunette and although I haven't been out in the sun or dyed it has developed gold streaks near the front where it is weakest. Is this a sign of anything in particular? I have been stressed, but not any more than usual.