Confused

I have the mirena iud, although ever since I got it I just know it’s incorrectly placed. They say they feel strings so its fine, but never check positioning. Anyways, I have been feeling pregnant the past few days. I took a test, there was the faintest line, so faint it may be indent. Well, today I had bleeding like top right, one swipe of toilet paper and never again. And now I’m having the brown like top left everytime I wipe, but slightly lighter sometimes. I’m confused. Any suggestions other than seeing ob? I’ll be going in 2 weeks to remove iud if I’m not pregnant because are going to try for a baby.