I've been in my period for 11 days now at the beginning it was light but its getting heavier. Last,last month I had unprotected sex with my boyfriend and took the plan b pill right away I got my period like 3 days after .that same month I got my period again with I thought it was weird. Then this month I got my period again but its still going I usually last 5-6 days and it's been 12 days I'm worried