Am I supposed to be this bloated

Three months since getting mirena and my stomach is genuinely about 8 months along. I keep doing pregnancy tests because it's actually shocking to look at. No other weight gain just a LARGE and ROUND stomach. Literally not joking that I look about ready to give birth. I got some fibroids partially removed so my uterus should be fine. The only thing I can think causing this within the past few months is the IUD. Is this normal? Will this go away? Nobody told me it was going to make me unable to see my feet or maybe I would have said no