My con has increased by 1 point due to my 15th level character leveling up. My hit point bonus due to con has gone up. Does mean I increase my total hit points by the new con modifier for just this level, or go back and add the extra hit point for all my levels?
You go back and add the extra hit point for all of your levels.
Right, so if your Con bonus went up by one, and you are now 15th level, you would gain +14 hit point immediately, then roll for your 15th level hit point gain.
You go back and add the extra hit point for all of your levels.
Right, so if your Con bonus went up by one, and you are now 15th level, you would gain +14 hit point immediately, then roll for your 15th level hit point gain.