Hello, I would be happy to help you.
From what you are saying, before the copper IUD was placed, you were not on any birth control. Also, it was placed in the setting of a concern about an unplanned conception. My concern is that there might not have been any followup after placement of the IUD to make sure that it "worked" to prevent
pregnancy. I will assume that you have done a pregnancy test and that it is negative.
In terms of the white / clear discharge, this could be completely normal, or it could be related to midcycle changes in cervical mucus, or it could be related to a common
vaginal infection, such as a minimally symptomatic yeast infection.
In answer to your question:
1. Yes you could be pregnant - this could have occurred before the IUD was placed
2. You need to do a pregnancy test now and repeat in 1 and 2 weeks
3. You need to schedule a visit with your doctor to assess the IUD given your pain - you deserve an
ultrasound to make sure it is in the proper location
4. If you pregnancy test is positive, you need to call your doctor as soon as possible
I hope this helps and good luck!!