Thoughts ?

Im a 17 year old petite female and last week i was on my stepdads phone because he handed it to me so that i could search something on the web for him and as i opened it i saw “petite 18 year old girl porn” popped up and ive felt so uncomfortable since my stepdad has always been the dad ive never had but always wanted always trying to get super close always make me feel loved and even putting me on his life insurance when i have 3 other sisters and he didnt put them just me should i be worried ? I feel super duper uncomfortable that he watches that type of porn (iknow porn is a very normal thing for men) but just that that specific porn would you feel uncomfortable if that was you ? Now try to avoid him at all cost