Please help is this normal

I’m 25. I just switched to tampons. Been using pads since I was 9. Im on my 6day Of AF and it’s BRIGHT RED.. like very new blood. I’m using a pad all day and I “thought” I stopped my period but when I went to the restroom it was almost filled with 1 clot. I can’t feel blood or clots pass anymore.. is that normal? Did I somehow stretch my vag out? I’m so confused