Worrying again 😂 sorry

So my recent worry was that I read sexual manga that was between highschoolers (I'm 17) and I didn't think until July that it might be classed as underage and that I could get into trouble for it. I've posted about this in the past and I was and am really scared about it. I dont do it anymore though. But I just wanted to know if I could get into trouble for it by like the police or something.

Also I was asking my friend about it discreetly while in my college library and I didn't think that the woman behind me (librarian) could possibly hear me if she had good ears. I never said the words underage or anything but now I'm paranoid that she heard me and will tell someone. I know its ridiculous but I cant help it. She doesnt know my name or anything but I still cant help but be paranoid