Brief Answer:
Implantation sign or Ovarian cyst

Detailed Answer:
Hi Ma'am

Thank you for asking Ask a doctor 24/7 service.

I have gone through your query with diligence. There are two possibilities in your case.
1. This can be the sign of implantation (early pregnancy sign).
2. It can be due to Ovarian cyst
A physical examination by gynecologist and ultrasound examination will be helpful to rule out Ovarian cyst.
You can use hot water bag to apply for 5 minutes on and off to get relief. You can also take Acetaminophen 500 mg. If not getting relief then better to consult your GP or Gynecologist.

Let me know if anything not clear.
I am happy to help you.
Thanks.

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