anyway, the one who should be counsel is the guy... girls, learn to protect yourself...advice your bf.
emergency pill is not a all time solution for "accident". you'll be very suffer taking these kinda pills...especially most of you will feel nausea and vomit..and if you did vomit out the drugs...
have to becareful, because there's a chance that the dosage is not enough to push you up to "safe" contraceptive level. that's when these emergency pills failed...

there's something wrong with your period. not i would say it doesn't cause irregular bleeding, but the pattern is not like this.
if you suffer symptomes of anaemia like : fatigue, lethargy all the time, and pale...
you need to go back to your doctor and check what's wrong with you.

for the mean time, pls continue on your medication.