When I am receiving a call the sound it makes is the one that my phone is supposed to make when I am calling someone so an outgoing call that ring !

When I am receiving a call the sound it makes is the one that my phone is supposed to make when I am calling someone so an outgoing call that ring! That is really freaking me out cuz I think I think I’m butt dialing but really it’s someone calling me and my ringtone is set to a different ringtone than that of course I didn’t realize u could even use that sound !! Does mean that my phone is being rerouted or diverted or call forwarded or that someone else is receiving the notification also? Another thing whenever I am on phone and connected to Bluetooth and I’m changing my ringtones all of them come through the Bluetooth speaker as I’m trying to pick one except for the Phone notification sound it doesn’t notice that I’m connected to Bluetooth and it actually comes to my phone and then if I go to try to change the message sound it goes right back to Bluetooth so only when I am picking a notification sound for my phone does it not recognize the Bluetooth is on