You are very fortunate, Rodan, because the charisms are increasing in you. It reflects your deepening contemplative life, and probably you are now using the charisms as your vehicle of meditation instead of a cognitive meditation object.
As for the intensity becoming perhaps uncomfortable, I found that as I took comfort in the charisms the less discomfort I experienced, but if one reads the major mystics some of them describe the charisms as agony, a sweet agony. In Christian mysticism it is described as the sweet agony of crucifixion and becoming identified with the identity of the Christ.
In Christian mysticism the charisms are seen as the
Holy Spirit coming to the mystic. In Jewish mysticism it is seen as the presence of god, which is called the
Shekhinah. In Hinduism the charisms go by a number of names, but
Shakti is one of them. In the Pali Canon they are referred to as
nimitta . In all of these cases the charisms are seen by mystics as the most sacred experience.