Struggling with Overthinking Social Interactions

Sometimes I have trouble discerning what's real and what's in my head. For example, I struggle with overthinking social ques a lot. I can't tell if someone's looking at me a certain way because I've done something wrong to warrant it or if it's all in my head and I'm paranoid. I feel an overwhelming amount of guilt for a lot of social interactions I have because sometimes I feel like I say the wrong things and end up hurting people, but I'm never even really sure if that's the case. Nobody has ever directly told me that the things I say hurt them but I just have a gut feeling like something I did was wrong. Obviously this is generalized anxiety, but it makes it so difficult to discern what's even real and what isn't. What am I worrying about excessively and what is a genuine valid worry.