Removed iud and immediate lh rise?

Victoria

Hello all. I got my mirena iud removed on 1/28. It was the last day of my normal period, however I did have two days of light bleeding afterwards. I decided to start ovulation testing today (2/1) i planned on testing the entire month to get a feel for my cycle. I got a blinking smiley face. Seems really early in my cycle for that, and I’m wondering has anyone had similar experiences. Can getting my iud out give me false readings since my body is trying to return to normal?