Is this normal? TMI

I’m on the mirena iud and my period isn’t supposed to be due for a week but I started it! Is this normal? The blood also has an odd smell which isn’t normal for me? I don’t usually have my period this early and the smell is comparable to lochia (after birth blood). I’m not sure if I should be worried or if this is normal? Please comment some advice! What would you do or think? Sorry for the TMI!