My uncle masturbating me

I’m thirteen, was two weeks ago on the floor of my uncle because my parents went on a trip I stayed the whole weekend, gave me the key because he worked on Friday (when my parents were), I arrived after lunch and left my things, late afternoon, the 8 or so, I took my laptop because I had want to masturbate, put on my headphones and started to jerk, my uncle came without warning when he came home from work, do not know how to react but my uncle told me to finish and we talked, finished quietly and went to his room, he said that what he was doing was normal and then I took the pants and told me the down, the shorts also told me not to talk to my family about this and then began to masturbate, from that day will your floor to touch us each other and porn, is it a problem