Been 10 says since birth and horrible feeling down belos

So it’s been 10 days postpartum and I have this feeling downstairs and it feels like somethings stuck there. Only way I can describe is a big tampon that hasn’t been put in properly and it’s dead uncomfortable and you feel like pushing it out, it hurts to sit down and walk or even stand up. Also hurts to start off a wee.... has anyone ever experienced this..