I've had AS for 15 years now (I'm 30) and this year the chest pain has been getting worse and more frequent. I experience tenderness, sharp pains and I feel like there is pressure on my chest and that I don't have much room to breathe. It comes and goes, and is sometimes more constant - for a day or a few days - but it is quite distressing. I'd be interested in knowing other people's experience of the chest pain. Thanks.