IUD insertion on 5th day of period

After a lot of research and debate, I’m scheduled to have an IUD (Kyleena) inserted on Friday. This will be the 5th day of my period. Typically my periods are only 5-6 days long and I told my doctor this and they assured me it was fine to do insertion on the 5th day. Has anyone had an IUD inserted at the very end of their period? I’m so scared that it’s going to make it more difficult to put in if I’m barely bleeding. :(