Mid cycle bleeding can be defined as bleeding from the cervix, perineum
or vagina that is severe and occurring between anticipated periods. The causes can range from:
changes in the body
Low thyroid levels in the body
Intra uterine devices (IUD)
Starting or stopping oral contraceptives
or injury to the vagina
It can be confirmed only by examination and if required investigations. So it will be better to have a through examination and get confirmed.