Thank you for reaching out to us.
Some irregularity is fairly common as women approach
menopause.
In this case, you should follow a full set of
veset calculations based on 26 Tevet. You would observe the
haflagah on 4 Shevat (though this has passed already and it sounds as though you were bleeding). You will observe both the
yom hachodesh and
onah beinonit on 26 Shevat. You should also observe an extra
yom hachodesh on 19 Shevat.
We hope this is clear. Please don’t hesitate to be in touch with us with any further questions.