I'm late

So I was due to get my period today, I have a copper iud for the last 2 years. This morning very very very faint pink on tp. Nothing the rest of the day, and very very faint pink tonight. With the IUD I'm either a day or two early or on time. I have 4 boys and wouldn't care if I was but not if I run a chance of miscarriage because of the IUD. Might test tomorrow of I still don't get it.

Update: last night before bed I went to the bathroom and it seemed like it started, tp bright red. Woke up this morning to nothing, even the tp was normal. This is weird and not normal for me. But not like my other pregnancy either.