Old blood discharge still after 2.5 ish weeks? Please help thank u

Hi! My period ended 2.5 weeks ago but for the past 2 weeks I’ve been having old blood discharge (like really dark brown) and a lot the first two days it looks like I had my period again sorta. Now after like 16 days I wipe and there’s this red new blood “vein- ish “ thing? Is that normal? Thank youu