Advice please

Irene • Married the love of my life in 2002 we have 3 beautiful kids 1 boy and 2 girls ages 11,7,4 we just decided that we want to try for baby number 4
So as of today I'm 2 days late of Af I took a test this morning and it was negative kinda worried I've never been late before and I just had my Mirena removed back in November could i just be missing a cycle or should I wait a couple of more days and retest thanks ladies