Brief Answer:
Detailed below.

Detailed Answer:
Hello,

Thanks for trusting us with your health concern.

I have gone through your query and would like to offer some information.

If you have regular 28-30 day cycles, you would ovulate 2 weeks after the onset of your last cycle.

This spotting is likely to be the ovulation bleeding. Brown color suggests old blood that is collected in the uterine cavity. The spasm is supportive of this possibility.

If the pain and spotting do not subside in a couple of days, further evaluation is needed to determine the cause and plan further management.

Hope your query has been clarified. Please feel free to contact for further information. I will be happy to help.

regards,
Shanti.V.

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Brief Answer:
Detailed below.

Detailed Answer:
Hello,

Thanks for writing back.

Pregnancy is possible if unprotected intercourse occurs during the ovulation period. However, implantation bleeding is observed at the time of the expected period. Also, implantation bleeding is a fresh bleed.

Hope this helps. Please let me know if I can assist you further.

regards,
Shanti.V.

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