Hi there,
After reading your question, I am of the opinion that:
1)
Frequent urination, missed periods, nipple soreness etc. could be signs of pregnancy.
2) However, you did get your period later on which lasted for 2.5 days, so there are less chances of pregnancy.
3) The heartburn and acidity could just be incidental and unrelated to pregnancy. The mild cramping in your ovaries and back as well as spotting could be a sign of ovulation called
Mittelschmerz sign or also could be due to pregnancy.
4) My suggestion is that you get a urine pregnancy test done. If that is negative, no need to worry and you can wait for your next periods.
In case you miss them, you can get a blood test called
serum beta HCG done to detect pregnancy earlier.
5) If the
abdominal pain persists or increases, you can get an
ultrasonography done of your pelvis.
I hope this was helpful.
Regards,
Dr. Shikha Shah