My last BM was 6 days ago. Since then I've had lots of gas but no stool. I feel bloated and uncomfortable. I eat and drink plenty of fiber and water.

May have slow bowels. Sometimes people have slow transit time. The time from mouth to anus. This may be helped by the fiber and water. You may need to seek information from your doctor and /or gastroenterologist. This can be determined and may need a stool softner or may be a propulsive agent. Follow their advice.