I HAVE A DOUBT

Hi, I have a doubt and I really need help.

On Wednesday I have sex without protection because I have the IUD, so he cum inside.

It is supposed that my period arrives on 2 days, I checked the threads of the IUD on wednesday and I felt them but I checked them yesterday and I didn’t felt them, so the IUD moves from his place.

Could I get pregnant?

Today I have some cervical mucus that is like a white liquid

Please help me!!! DOa