Pregnant with iud

Hello I'm pregnant with iud. I actually had the iud for almost 4 years already but on December 1st I started to feel wierd with my breast feelings sensitive and nauseous. So I took 4 pregnancy test came positive. So I went to ER December 5th because I was having ugly cramps and spotting they did ultrasound my iud still in place and my blood test says I'm pregnant. I don't know how many weeks I'm cause I haven't had my period after 5 months I had iud on me. I have my doctor appointment on January 6th 2021 I'm all anxious 😟. I really want to have this baby it will be my baby #3. But I did stop the spotting just have lil cramps there and there.