 [ Symptoms ] my 6 year old was diagnosed with cellulitis what do i do [ Disease ] what is wrong is that you are not taking your birth control pills properly missing one by three hours is no big deal but missing two pills in a cycle could trigger the spotting especially if you are on a low dose oral contraceptive i do not know what you are taking spotting can occur even if you take your pills consistently so consult the medical provider who is prescribing them for you for patient specific advice sometimes a minor change in dosage would be beneficial if this has happened before