I have an IUD and have had it for 8 months now. I bled constantly since a little before April 16th…

I have an IUD and have had it for 8 months now. I bled constantly since a little before April 16th and just now stopped about a week or two ago. I have been feeling "off" for the past few days. Nausea, frequent urination, emotional, headaches. my husband and I also had an incident that caused him to become injured. We were told that he ripped it but we believe that my IUD could have moved causing it to stab him. I took a test a week or two ago and it was negative. Is it possible for me to become pregnant and it not show up?