Ah sis, normal lang yan especially sa first few months ng IUD, a few of us moms in my circle had the same experience, parang ang period mas matagal at mas heavy talaga sa simula! It usually settles down after 3-6 months, pero if it's still that heavy after a while or you're getting worried, best to check with your OB para ma-rule out kung may iba pa, they can make sure the IUD is placed correctly at walang ibang nangyayari. Hang in there, maraming moms swear na sulit ang IUD once the adjustment period is over!