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You have delayed period and in reproductive age group with history of unprotected sex during ovulation period first possibility is pregnancy
You wanted pregnancy and there is very good chance that you might be pregnant.
You are 1 week late for your expected date so go and test with urine pregnancy test good luck.
If pregnancy test is positive then visit your Gynecologist for proper advice and continue pregnancy there are some hormones and vitamins
may be supplemented.
If no period and test is negative wait for few days and repeat the test and Consult Gynecologist and a Beta HCG
in blood and Ultrasonography
may tell us actual position.
Dr. Akhilesh Dubey M.D.