One Day, I looked at the dates of BD for you. This is still very fresh. You have just been through so much.
I urge you to find a therapist who specializes in trauma recovery. Keep looking until you find the right person. Depending on where you live I suggest you consider someone who can work with a variety of modalities, including somatic healing, acupuncture, etc. A good therapist is amazing but you also need someone who can help you through the subconscious/energetic impact of this shocking and traumatic event.
Don’t blame yourself if you are triggered. The fact that you are so self aware is very helpful.
Even without a lot of time passing, I believe that by insulating yourself, doing whatever it takes to avoid additional traumas (even if this means going low/no contact), and focusing on your own financial, emotional, and physical safety, AND finding the right healing support, you can overcome these triggers in a way that feels good and natural.
I have mentioned many times. I think the number one advice on this forum should be treatment of the LBS for acute trauma. It is really important to find someone to support you this way.
And yes, eventually you will see the entire story unfold and the meanings of many of these things will change. Be patient with yourself and give yourself all the days, months, and years you need.
Big hugs.💛