NyQuil and DayQuil can they stop your period

lil monsters momma

I've been trying to conceive for 3 months my last period was March 8th but I got really sick around April 5th and I haven't got my period I'm 12 days late now and those days that i was sick I did take NyQuil and DayQuil I have read on other websites that taking those medicines can delay your period could that be it or could I be pregnant I have tested and all my pregnancy test come back negative