TMI mirena iud spotting????

Hey ladies im just really curious about this ive never really had spotting this color or texture. I was on the pill for awhile and i switched to the iud mirena i was reaching the end of my period (period started ob monday and i was on my placebo pills) when i got it put in thursday and i was at first bleeding red and then it was just a dark blown then yesterday night it was like this. I havent experienced any spotting like it is it normal? I havent been spotting as much since last night.