Thank you for reaching out to us.
Even a small spot of red or another
niddah color typically invalidates a
bedikah and the
clean days that preceded it, even if a period otherwise seems to be over. Based on your description, you do need to make a new
hefsek taharah.
The exception would be if you could establish that there was a
non-uterine source to which the bleeding could be attributed.
Sometimes little variations in someone’s health or stress levels can affect the cycle as you describe. Even so, if you have experienced unusual discomfort or have difficulty with your next attempt at a
hefsek taharah, you may wish to see a physician or a
bodeket taharah (a nurse trained in these matters) to evaluate whether you have a non-uterine source of bleeding.
Please let us know if we can be of further assistance.