Why am I experiencing light bleeding at 80 days postpartum?

Considering the beta hCG value of 0.30 mlU/mL from D-23 days to D +45, it is probable that vaginal bleeding recorded after day 17 following menstrual cycle must have emanated from implantation bleeding Nonetheless, a gynecologist should be consulted for further evaluation and confirmation.

The chances of getting pregnant from oral sex are quite low, but it is not ruled out. The bleeding you may have had after taking the unwanted 72 pill could, indeed, be attributed to the pill itself affecting your menstrual cycle. This can cause spotting or irregular bleeding. Such a thing is not a sign of ovulation bleeding. You can experience a late or early period as well as any of the above. The important thing is to monitor the symptoms enough and give enough time. Recall the pill can throw off your cycle. If you are concerned, be patient, and take a pregnancy test to make sure. Avoid stressing out, because stress can also be why your periods are irregular. 

Missed periods with spotting might be signs of pregnancy. Stress, weight fluctuations, hormonal imbalances, or medical conditions also affect the menstrual cycle..Visit to the doctor to evaluate exact cause and treatment

Norethiste­rone tablets postpone pe­riods, maintaining uterine lining ove­r extended duration. Short-te­rm usage is safe. Howeve­r, potential side effe­cts mirror menstrual symptoms: abdominal discomfort, headaches, nause­a. Strictly adhere to the physician's prescribe­d dosage instructions to circumvent complications.

You might be having signs of pregnancy, a medical condition like menstrual cycle irregularities or ovarian cysts affecting you. A gynecologist should be consulted for a detailed examination and correct treatment.