Sort of. I have always had a good relationship with my mum and have always been able to talk to her about stuff but it was the years from 14-18 that were difficult because I started doing things or feeling things I didn't necessarily want to share with her because she was too close.
We clashed from about 14 onwards because my friends were beginning to be allowed more freedom and I wasn't, or wasn't allowed as much. My sister (3 years younger) was still wanting to play childish games with me and more often I just wanted to be alone/be with my friends/write really bad goth poetry and listen to music There were also all the mood swings which didn't help with the above, and school work steps up a bit in the GCSE years with coursework etc so I felt a lot of pressure there because I was never very good at organising myself.
There are also a lot of big issues it is common to encounter for the first time as a teenager, if not personally then definitely through friends - boyfriend/girlfriend issues, pregnancy scares, alcohol, drugs, sexuality, death. There were things I would be told and sworn to secrecy on which I didn't feel I could tell my mum about because she knew my friends, but would really want to tell her. I did tell her some things in the end and it was fine.
I do remember I was very angry at times and I think it must have been hormonal or frustration because I'm not an angry person at all and never have been (apart from my teenage years!) - I did probably say some horrible stuff, I remember one time I made my mum cry And that made me stop and think and I ended up crying too because I didn't realise I had been upsetting her so much and I hadn't meant to. I think it got a little bit better after that but really our relationship improved the most when I left home and we had some space from each other. I do consider her a friend now and we can chat about anything, I see her about once or twice a week, we could chat every day on the phone and it would be fine but I do think the teenage years are about breaking away and growing up and needing that space.