dalila,
I started out spacy and dissociative. I knew I was 'out of it' to some extent but never dreamt I was this split. Therapy for me over the years didn't involve alters or talk of DID.
Years of therapy were just about getting to a place where I was ready, safe enough, stable enough to look at my dissociation and the severity of it. Like you I became aware of losing time in larger chunks, started losing mail, started getting lost while driving, all things that HAD NOT been happening before while I was spaced out driving.
Not saying this would happen in your case but letting you know that I did not enter therapy years ago with any idea of DID but years later here we are.
I still cannot always tell when I'm going to be 'checking out'. It is hit and miss learning to tell when these 'leave of absences' are going to happen.
Have you read any books on dissociation? There are a couple that are helpful that do not delve into the depths of DID but rather more of the dissociative spectrum.
Good luck. And let's work on keeping that leadfoot a little lighter!