TMI!! PLEASE HELP

So basically I had a post last week and I was worried I was pregnant because of my discharge... on Saturday I had gloopy brown mucus when I wiped and I haven't had it since then... when I went to the toilet a few minutes ago I noticed what is in the picture.. does anyone know if I'm over reacting or should I do a test? The last time I had sex was about a month ago and I done tests after and they came up negative I'm also on the depo if that helps...

Please help me