I believe it could mean you are holding on to negative energy . It can cause an impending feeling of doom . Negative energy , fear and guilt are all things that bring our spirit down . By changing your thoughts and energy to positive you can feel better .
Sometimes the things we listen to or watch , or the people we hang around can leave us feeling negative . Be careful what you fill your spirit with .
In the past I have experienced feeling like something was wrong with someone specific and it was true . I have also felt an annonymous feeling that something was wrong with someone , I prayed and it lifted . I felt instantly better . So if you are spiritually sensitive this could also be a reason .
Many have negative thought patterns and don't even realize it . Try to tell yourself only good things and think positive