Ay sis, normal lang yan, sometimes ang body natin takes a few weeks or even months to regulate ulit after IUD removal, lalo na if matagal mong gamit, kaya huwag mag-alala muna! But since it's been a while na and gusto mong malaman kung pregnant ka or kung bakit delayed, better get a pregnancy test or visit your OB para sure, kasi they can check what's really happening sa cycle mo at put your mind at ease. Good luck, mama!