Mid-cycle bleeding can occur at the time of ovulation as a result of the hormone surge prior to ovulation that may induce a breakthrough. It is often limited to spotting for a couple of days at the maximum and may be associated with lower abdomen pain as the ovum is released. There is also a change in temperament during the premenstrual phase and this is part of the premenstrual syndrome
. This is hormonal
. If simple measures like exercise, proper diet and relaxation do not help, you may need to go for specific medications that include vitamin and hormone supplements and anxiolytics. Hope this helps.