Guidance for a Chica

I currently have an IUD (got it on May 2018). recently I have been feeling kinda off and have experienced nipple tenderness/burning , brown discharge (on day 3) and noticed some bleeding today. I had low key cramping yesterday and today, my body aches and exhausted at times. I went to the doc about 2 weeks ago and got a vaginal ultrasound and saw that my IUD is in place and also did blood work and came back negative. I've been doing PT and they come back negative. I did one today and it looks a bit faded but am not sure if it counts as a +