Is this normal????

I haven’t had my period in about 6 years because I was on the depo birth control shot so maybe I’m being super paranoid about everything. So I started my period this morning and put in a tampon and when I went to change it it was very dark red and almost black in some areas and there was a glob of blood attached to it. The blood was really like stringy idk. And then when I wiped this is what it looks like (sorry if it’s really gross). I just haven’t had a period in so long so it’s freaking me out.