I started using the Mirena for the first time after the birth of my DD. Prior to that I had used the pill. I've been loving it, especially not dealing with periods, as I had it put in before mine had returned. This week I started spotting (I think). I've never spotted before, but I expected it to be "spotty". This is more like a light period, similar to the last days of a normal period. Is this "normal"? Like I said, I haven't experienced any period or spotting since before my BFP, nor had I used the Mirena until after my pregnancy.