Hi Kimm, Welcome to HealthcareMagic Forum.
does not cause abnormal vaginal bleeding
. May be you have a Hormonal
Imbalance or a Infection. Kindly get yourself examined by a Gynecologist to rule out the exact cause. You should be seeing your Doctor if bleeding causes you change more than 3 pads per day for more than 2 days.
Wish you Good Health, Take Care.