I felt the exact same for a long time. Everytime I woke up i felt like I had a new face on. I'd ask people if I looked different and they always said no. I get the hairstyles thing too. I think it's part of growing up and ur face changing in front of your eyes. When you're a teenager the difference between ur face within 1 year apart is more drastic than once it's set when you're older. It sucks. But it's not gonna be forever. But if you genuinely thing you have some kind of dysmorphia that is disrupting your everyday I'd recommend seeing a therapist of some kind and expressing it