Period after symptoms are these normal???

Annabel
Hey ladys so I'm new to this site, but I was just wondering if these symptoms I get after my period are normal or if I should go see a doctor! After my period I get this really Werid and gross smelling discharge it's a super dark color like brownish or dark red color, is that just left over blood draining out? And then itchiness! It's been happening since I've been sexually active so about a year and a half ago after every period. Help!!