Hi, Welcome to Health care magic forum.
Some times it may happen with the pills. It may be the result of your missing the pills in the previous month you had bleeding, and it is repeated again this month, if i am right,it may stop next month, or there after.
If it is not the cause, the other causes are the anemia
, and infection.
Take more of green leafy vegetables, pulses, sprouts,and
protein rich foods to have a good cycles.
Wishing for a quick and complete recovery. Thank you.