Oh, I have also experienced more dark nights of the soul that I care to remember. One "night" actually lasted almost two weeks and when it was finally over and the sun literally shone in my eyes, I cried so deep, having survived.
Today was another dark day with the heart chakra hurting and feeling empty and tiny. To spare you from the teary details, I ended up having a brain area on the left side of the head activated. This time it actually hurt for a while. Also the left side of the body received treatment. What a day. Again. Blessings!