My period is lasting way longer than usual, I started my period on active pills this month after having sex which has never happened before, I started my period Monday and it is now Sunday, my periods usually last 4-5 days and they're normal flow, my flow has been off and on light and heavier, when I think it's done it will be really light and brown then the next morning I will bleed again, I am on day 3 of placebo pills now, what is happening? Should I be concerned? I went to the doctor but that was when my period was only 3 days in I didn't know it would last this long, what should I do? What is it? I took antibiotics this month for a dog bite this month if that has anything to do with it, I've never had my period for this long and it's stressing me out so any advice helps thanks.