Undiagnosed tics

So my parents noticed my tics when I was around 6 or 7 years old. They were small movements and sounds, nothing that really has a big effect on me. They knew what it was because my dad is diagnosed with tourette syndrome. When I was 13 or 14 they started to get worse and more noticable and I began to push for a diagnosis. We consulted with my gp and I was referred to a behavioral specialist but then we never followed up with it. I'm 17 now and have been trying to figure out a way to explain my tics to people at school and teachers and stuff but I get so embarrassed and I don't know what I can or can't say without a diagnosis. I feel like I've just been faking this for like ten years. Any advice would be great 😂