2 days after our intercourse i decided taking up Lady Pills, then til now I didn't have period

Hi.. It's me Mia, I'm 22 years old.My problem is I already 24 days late of period.It's possible I'm Pregnant?i don't have contraceptives taking up during the day that we have intercourse..but after 2 days of our intercourse i decided taking up Lady Pills, then til now I don't have period. Im done home Pregnacy Test twice but is negative. Pls help me.Thankss