Hello,
Thank you for your query.
Pregnancy is suspected when you miss your period.
An early period may be due hormonal imbalance which mostly resolves itself within 2-3months. You may have ovulated early or not at all.
This is normal when it occurs occasionally.
Even the symptoms associated with
menstruation (like
abdominal pain, headaches,) can vary.
Absence of these symptoms do not indicate pregnancy.
If, however you continue to experience short cycles or heavy bleed consult your
OBGYN to check your hormone levels and do an
ultrasound to check for ovarian cysts.
Sudden weight changes, major lifestyle changes, Thyroid hormone imbalances can also cause
irregular periods...
There is nothing to worry as of now and I do not think you are pregnant.
If you miss a period and you have regular intercourse, take a pregnancy test.
Hope this helps.
Please let me know if there is anything else I can help you with.
Wish you good health.