Does anyone know what this might be?

So i ended my period on the 10of june and had sex on the 11th and the condom broke...for the past 3 days ive had a light brown spotting and frequent urination and mood swings then yesterday i stated getting a headache and today i have a headache i also notice that this morning the bleeding got alot heavier and is a dark red...does anyone know what this might be..i dont think it can be my period since i already had it this.month and im not on birth control..?