Unexpected pregnancy

Hello! I had a period from Jan 6-10 and on the 11th I got a positive test!

I had taken a test with a girlfriend because she felt she was however mine was just to support her like a “here I’ll take one with you” type thing and mine was positive!!

I’m so confused because I just stopped bleeding the day before AND I have a copper iud, I know nothing is 100% but I’m just shocked because I bled for 4 days and I have no symptoms.

Anyone else have a experience like this?