help pls i

p

i took plan b a few weeks ago (maybe about 3-4) and about after a week after i took it, i started bleeding, this was a bit lighter than my usual period and only lasted a few days. usually, i’m supposed to start my period at the beginning of each month so i’m a few days to a week late to my period now.. i took a pregnancy test 2 weeks ago to make sure the plan b worked but now i’m not so sure. yesterday i drink a whole bottle of orange juice but no signs of anything yet… what do you think is happening?? is it just the plan b delaying my period? even after a month taking it??