M.G.
Hi S.!
I just had my Mirena IUD taken out in September. I had a period that lasted a little longer than my normal but it was pretty much the same as far as heavy to light. The only thing that was weird for me was I would have them about 37 days apart instead of 28. Mine didn't last very long as I got pregnant in November. It was not painful at all...it may just take your body time to get used to menstruating your normal again.
M.