What Are The Chances Of Pregnancy After Taking Unwanted 72?

had unprotected sex with my BF on 18th Sept. My last periods came on 10th Sept & ended on 15th. Immediately after having sex, i had unwanted 72 within half an hour. On 27th I again started bleeding ,and end up in one day...one more thing, that was first time for us .......i dont know he end up my verginty or not. bcoz.. my BF nt proper inserted his penish in my veginaaa..some part of sperm jst in and remains out side....