Knight of Cups represents your ability to see things in a new way and make important decisions. It can also indicate a deep emotional connection with your family or friends, so it could be a sign that there will be significant changes in your family. The charter itself suggests that these changes will be positive, leading to more sharing and stronger bonds.
Reversed Knight of Pentacles indicates that there may be obstacles blocking progress. You may find yourself in a situation where it is difficult to achieve the desired goal and the problems may seem insurmountable. This can lead to frustration and confusion, but overall the challenge can have a positive outcome for you and your family if you tackle it with determination and creativity.
The cards suggest that there will be major changes in your family, although some obstacles may need to be overcome before you reach your goal. The challenge shouldn't be insurmountable, but it will require time, determination and creativity on your part to overcome it. So, the answer to the question is: Yes, there will probably be big changes in your family.