Is it normal that watching stranger things makes me uncomfortable?

When I'm watching Stranger things with my mum and sister I feel uncomfortable when there is a kissing scene between the main characters because of the ages of the characters. It makes me feel physically sick to the pit of my stomach and angry. I find it really creepy as well that the producers of the show are broadcasting these people of their how many times they have been on earth as it orbits the sun, kissing for loads of people to see. Ew