mirena iud

Brittany
May 2015 I got the mirena Iud,I got it removed in March 2017.I had some widthdrawl bleeding for about 3 days. Ever since then I haven't had a period. I've tested for pregnancy the first month (April) but got a bfn. Idk if I should be concerned or if this is just normal after iud removal...hellllpppp pls 😫😫😫