Late period 2 months after Plan B

2ND PERIOD LATE, TOOK PLAN B FIRST CAME ON TIME, BUT THIS ONE ISNT?!
I took plan b a month ago when my boyfriends condum broke, on nov the 5th, took the pill 16 hrs later. on november the 17th i got my period and it lasted for 8 days, heavy all the way through! this is unusual because mine usually last only 5, but i was posotive this what my actual period, took 3 tests, all negative. now, i am waiting for my 2nd period. it is december the 21st, i'm freaking out because i feel like im going to start, (wet and everything), i'm not bloated, i don't feel sick, no weight gain, boobs hurt a little but i always get this before my period, but NO PERIOD.
is this normal after taking plan b?
*I have never been on birth control so i was thinking maybe this hormone change is new to my body and that is what may be causing it.
i can't take a test until next week because my boyfriends out of town & i don't have my car until jaunaury.
my boyfriend, of course is not as worried as i am, considering he says he's 100% sure that he did not cum inside me, and was very careful changing the condum, pulling out, making sure nothing came near my vagina entrance or thighs.

to be honest, before yesterday, i would of never considered pregnancy, because i was that sure.
we did everything perfectly, but i know theres always a chance.
PLEASE help, thank you so so much!