Is there any way I can see on my iPhone if there's a GPS tracker?

My parents split up but they still share the same verizon account. My mom and I were pretty suspicious that my father has been reading our texts through the account and driving by our apartment complex. Last night I went to my friends to feed their cat and as I was walking out I caught him driving by with absolutely no excuse to be there.
I feel like I'm being followed wherever I go now, so is there any way I can check that he has a tracker on my phone?

You can call the company and see if anyone have a locator on your phone

First on your iPhone go into settings > iCloud > and check if Find My iPhone is on. If so and your father knows your apple i.d password, immediately change your password (link below). If you're iPhone doesn't have iCloud go into Settings> Mail > Mobile me and if Find my iPhone is enabled delete that account form your iPhone. If any of these things don't work you can all your service provider and ask them if they have a GPS tracking enabled. Also i've owned many iPhones and i'm pretty sure its impossible for him to read your messaged without him physically holding the iPhone. If youre still worried, I suggest to restore your iPhone and start new.