I may have a mental problem?

Alright, I'm scared that I may have some mental problem. For some reason, while conversing with someone, i will think there is some kind of hidden meaning to what there saying. I used to think they really were trying to hint at something, but i realized it happens way to much. My dad has this problem, i have noticed. He will "read between lines" that, well, aren't really there. I really don't want to live my life on thinking my friend is trying to hint at something that isn't really there. Please help me you guys, If this is a problem, or it is hereditary, or there is medicine, please help.