?? Pls help ladies

Had sex july 12th and when he pulled out, uhh the condom was still in me so well u can understand the rest.. i took a plan b maybe an hour after. (I was scheduled to have my period on the 15th i think) but then i started bleeding the next day! I was already feeling PMS and stuf.. so was that my actual period that came early because of the plan b or ?? Its august now and my period should come after tomorrow and i have NO symptoms.. and i usually do. Should i be worried? (BTW i bled for like a week after the plan b which is a normal cycle for me BUT the period was either light or not even there or it would come back in full flow) pls let me know what this could be