It will show up. Any billed apt with your dr would appear as a claim to your insurance.
Just use condoms, make sure they are in date because they can expire.
IUD’s hurt like hell when they are placed and mine gave me horrible migraines. When I had the Mirena I ended up having a migraine so bad, I couldn’t see and crashed my car into an empty parked car. Took the IUD out, migraines immediately stopped.
Try going to a planned parenthood and getting regular birth control or a nuva ring etc, etc. There are more options than an IUD.