Can’t feel the strings

LanaXoX🌸Student🌸Engaged🌸37🌸Mom of 1🌸 • LanaXOX 🌸

I got my cooper IUD September 3rd when I was in my period .The nurse I met before the gynecologist told me to ,after my period check the strings during the 1st 3 months .To check if the IUD is there.But I can’t feel them at all.What should I do?And I don’t want kids at all.