advice?

ok so i need help, me and my boyfriend

had unprotected sex the day before my

predicted ovulation. he pulled out but i

took a plan b 10 min after anyways. 5 days

later i started light bleeding and that was

for like 3 days. my chest has been very

sore and swollen but i don't know if that's

just me pms or something else. i did end up taking another plan b a week later over another incident. ive taken a

early detection test 2 days before my

period and it came out negative. My chest

still feels very swollen and sore and ive

had light cramping and but my period is

supposed to come today but hasn't and

idk im still unsure and don't know what's

going on, if it’s the plan b messing with me or