Dear young lady, every human being goes through some bitterness, traumatic situations in the past, no matter what the intensity was. Working on letting go of the past with an intention of moving ahead in life will be the need of the hour.
I can understand how you must be feeling about the very thoughts of those bitter past issues. You can either talk it out to your family members or if you feel unsafe or uncomfortable if it would cause another challenge, you can consult a Counsellor who can surely help you come out of this situation.
Work in it and don't sink into these thoughts. Life is beautiful and it is not worth worrying about the past.
Next Steps
take appointment with a Counselling Psychologist in your city