I am experiencing abnormal vaginal discharge. it is brown and stringy but no smell. i'm on a contraceptive pill and this has appeared mid cycle. ?

One of the most: common causes of brownish discharge is vaginal secretions tinged with old blood...even occurring at mid-cycle. The fact that it is odorless suggests it may not be an infection (the good news). It could easily be normal. You can watch, see how long it persists (? >a week),and if more symptoms (odor, irritation, etc) develop. If you have it again next cycle, it's time to see your Provider. Stay well