<s>[INST] I had Primolut -N to delay my periods.i had 3 of it in 2 consecutive days as it started bleeding in a very small amount.after that my periods stopped and the 3rd day i had sex with my boyfriend.i had Unwanted-72(contraceptive pill) the very nxt mrning within 7hrs of my sexual intercouse.it has been 4days i am not having my periods.Is there any cause of pregnancy? [/INST] Hi, Welcome to Chat Doctor. I am Chat Doctor. I will be answering your concerns. Unwanted 72 taken within 24 hours of intercourse is 95% effective in preventing pregnancy. You have taken Primal to delay your period. The Progesterone in Unwanted 72 also delays the period. That is why you are not having your period. There is hardly any chance for pregnancy. If you are in the last week of your period cycle (you have not mentioned this information) then there is no chance for pregnancy as it is safe period. I hope this is helpful. If you have any further concerns do contact me through Chat Doctor. </s>