Hi doctor, I have gone on menturational cycle on 27th feb 2018 to 4th march 2018 but in middle of periods i had sex with my partner. So after that i took contraceptive pills. But now on 12 march 2018 again i am having periods started. Pls suggest me some solution . Do am i not pregnant symptom or wats this plz help me out. I dont want to get pregnant so plz tell me the cure and medicines as well.And in between this timespan i got very much allergy in my body with red patches. As i was travelling to banglore these days. Thanks in advance for your suggestion and problem resolution.