Pregnancy with copper iud

Patient: Ive had my copper iud placed in 3 years ago. Never had a problem with it til a week ago. I noticed body changes. My breast are extremely tender, fatigue, big appetite, loer back and abdominal pains. I got paronoid and automatically assumed i might of been pregnant. I checked(myself) for the strings of my iud and i dont feel them nor the copper. I dont feel it at all. And just to add 3 days ago I noticed pain while intercourse and extreme cramping ever since. what should i do?