IUD and Pregnant?

I’ve had my Paragard IUD for over a year now but this month I am currently 6 days late on my period. Today I had a little bit of pinkish discharge. On Thursday last week I had a huge gush of watery and somewhat white discharge. I had the same thing again on Sunday. Am I pregnant? I had unprotected sex last weekend and the weekend before because I can only see my boyfriend on the weekends since he goes to college a couple hours away from me. I had mild cramping and lower back pain for a couple days now. Is it too early to test if I’m pregnant?