Is this normal?!

So I had my baby December 13th and at about 2 weeks PP I felt almost 100% better in the lady region. For the last 2 weeks however there has been an off smell down there which I have never had vaginal odor but I assume it's because of all the discharge and having to wear pads all the time... Well now it's 3.5 weeks PP and all of a sudden I have an aching pain down there now! It's really bothersome! Is it normal to have pain come back once it's already been gone? Is it a possible infection or is this something normal after your first vaginal delivery??? Please help 😞 also if you've ever experienced this are there any at home remedies??