Re: Seen somethin I didn't wanna see
I think you should talk to a counselor in person. Someone with a Ph.D. who is a licensed clinical psycologist or a Masters level counselor. LMFT is a licensed marriage and FAMILY therapist with a masters degree and would be good. You can look on their website to see what they specialize in. You'll find many counselors/therapists will list a number of specialties, but you can get an idea of what their primary interest is if they list more unusual things such as eating disorders, fear of flying, etc. I would look for someone who works with families or who has a general practice rather than a niche specialty.
How old are you? If you're in college you have access via the school's counceling or medical clinic for a referral, and your insurance may cover it nicely. If you're in high school it may seem to be a more difficult issue to maintain your privacy from your parents. I would start with your school counselor. When you ask for a referral you don't have to give any details at all. Just say you're having some difficulties dealing with a personal issue and are looking for a therapist or psychologist to talk to. I would avoid using a school counselor as your therapist.
Also, universities may staff their counseling office with graduate students. Imo these people are too inexperienced for your situation (and most situations beyond normal school stresses).
If you are a dependent, your parents' work may provide EAP, Employee Assistance Program, which is totally free and totally confidential counseling with an outside private practitioner. These people would be ideal and easy to use. As a family member you should have access, and nobody will ever know you went. You can look at the employer's website and see if they have info. I would call the EAP office and ask them how you as a dependent can access the services.
You can never unsee what has been seen, but you can learn to understand and accept it.