My age is 25 yrs.i was undergoing homeopathic breast cyst treatment for last 5 months..i hv unprotected sex with my husaband on 7june 2015..i had taken unwanted 72 within 16 hours of unprotected sex.i always have regular periods prior..i had my last period on 27may,and i took unwanted 72 on 8 june in the morning.during two three days i stopped having my homeopathic medicine as i though may be it would functioning of my contraceptive pill..after 3 ,4 days i again started the homeopathic medicine for atleast ten days and i have spotting on 21june.i thought it would be my regular period but it was very very less i even dont require any safety napkin..i become worried and duscontinued my homeopathic medicine..bt my period didnt come in 25 june which was my regular date..i have my urine pregnancy test and it was negative.i waited for next month till 25 july 2015 but my period is still due this month.even i have again test today with preganews kit and it again shows dark single negative line..m i pregnant?i should go for blood pregnancy test?i am worried because i dont want baby due to my breast problem.can pregnancy test shows wrong results even after two missed periods.i am vry stressed.plz help me out..i want to consider it a confidential problem.