Should I go to OBG/YN or ER or just leave it?

I’ve had my period for 2 weeks now with no signs of stopping. My period usually lasts 5 days, absolute max 6. I’m on the Ring, but that usually completely stops my periods, not makes them worse. The blood also smells much stronger and worse than usual, almost like rotten food. I’m pretty severely anemic, but I won’t drop dead or anything.

Has anybody else experienced this? How bad is it? I have an OB/GYN in about 3-4 weeks. Should I wait for then? Or ask for an emergency appointment? Or could it be an infection and I should go to the ER?