Should I be worried about an ex possibly tracking my phone?

My ex recently “butt dialed” me. I haven’t spoken to him in going on 4 years. Thought I had him blocked but guess not. I just so happen to be in his state for the first time in my life for a couple of days visiting relatives who are here temporarily. I’m only here for five days and nobody except my immediate family knows that I was traveling.

All my privacy is set high, no Snapchat or Facebook locations etc etc. the only app that consistently uses my location is Google maps (I checked recent location use and nothing was off). My indicator for location services has not been on at all, except when using maps. No photos of my trip, fb announcements, nothing that would tell anyone my location.

There are no strange apps on my phone etc etc.

I know that there are apps that track location without notifying you.

My ex was super paranoid that I would cheat (guess who was actually cheating..) and he would have had access to my Apple ID and phone while we dated. I’ve since changed my Apple password. I’ve also gotten a new phone since then but I’m not sure that matters with Apple ID.

I have a really weird feeling because my ex was so paranoid about cheating, I wouldn’t put it past him to have put something on my phone while we were dating.

I suppose maybe it was coincidence but I can’t shake the feeling that somethings wrong when I was just happen to be in his state after 4+ years of no contact.

I would love to know if I am overthinking or if anyone has any ideas on things I can check into.

If this is the wrong sub, apologies, didn’t really fit into the other ones that I am familiar with.

Edited for spelling because I’m tired apparently.