While all families do have their issues, families that have big secrets is generally a warning sign. It's kinda hard to answer this question because it is rather vague and everyone is going to jump to their own conclusions. I work with kids who are abused, so my mind tends to go to physical abuse and ince.st.
Well it always depends on what is going on. If your parents are always fighting or having time by themselves with the door locked it might just mean they are going through a bump. But never assume it is your fault.Things will get back to normal after a while.
When you have one, all families have problems, even seemingly perfect families have skeletons in their closets- some are just more severe than others
All families have problems. All families fight and complain about things. If you gave us more detail, we could help you with the problem.