Hi there, I have understood your concern. I will suggest you the best possible treatment options. 1 ) First of all do not panic. 2 ) As you might be aware that in a woman with regular cycles day 10 to 20 of the cycle is the most fertile period of cycle. If you happen to have unprotected sex act in the fertile period, then You Stand chance to get pregnant. 3 ) As you have mentioned about your symptoms, I will suggest you to get morning s first sample of urine tested for pregnancy. In case of doubt blood beta HCG test and USG will be of help. Usually with morning s first sample of urine, pregnancy test is more reliable. 4 ) if you are not pregnant then you can simply wait for the onset of periods or induce the periods with progesterone tablets. Your treating doctor doctor can guide you further about the doses and withdrawal bleeding of the same. 5 ) Even if you are pregnant, you can opt for termination of the pregnancy with medicines safely till 9 weeks of pregnancy under medical supervision. 6 ) In absence of pregnancy, your symptoms can be due to PMS - premenstrual syndrome. In that case, I will suggest you to opt for a healthy diet and regular exercise regimen . Start on long acting form of Vitamin B 6, vitamin E and evening primrose oil supplements on daily basis at least for next 3 months. I hope this answer helps you. Thanks. Dr. Purushottam Neurgaonkar.