Only a diagnosis by a professional can give you a clear answer.
In the meantime, the book "Coping with trauma related dissociation" is all about getting a more stable life while learning about dissociation so it works also for people without dissociative disorders.
Do not hesitate to ask your different practitionners to help you stabilize your daily life. There are CBT therapies aimed at coping with ADHD and bipolar, attachment therapy for borderline, etc.
Most of the therapies for dissociation also help to manage borderline because being borderline is a form of dissociation between two types of attachment: one part of you is anxiously attached, the other is avoidant, they both play ping-pong with your emotions and make your life a mess. Trauma and dissociation therapy help healing this and build a safe attachment instead.
For more informations about dissociative disorders as a whole (it's a whole spectrum, DID being only the more intense version!) and their therapies, check the ressources thread I linked in my signature.

Hope that you'll find ressources to help you!