If you have had unprotected sex with your partner and have taken an emergency contraceptive pill after the intercourse , then you should expect your menses to return in 7-10 days which is normal.
If you miss your periods during this month, you may perform a urine pregnancy test after week to rule out pregnancy. If the pregnancy is ruled out then it is likely that the symptoms you are experiencing may be PMS associated.
I hope i have answered your query,
wishing you good health,
These Q&A’s are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.