Thank you for your query.
With an altered and very slight period, pregnancy
is always a possibility.
Please take a urine pregnancy test to confirm this.
Other causes of a scant period are - anxiety, stress, emotional upheaval, hectic travelling, rapid fluctuations in weight, thyroid
hormone disturbance, polycystic ovaries
, ingestion of hormonal
medication , etc.
You should consult a gynecologist to know the exact cause for delayed cycles.
ALso, please have protected sex in the future.