I have similar experiences with headaches and I didn't think they had anything to do with my DD until I started going to therapy. I started trying to keep a journal when I realized days were missing, and (someone) was writing about things I had no idea about. It took me a long time to figure out that the headaches were connected to my "switching". Now I pay more attention to them and I use the headaches to monitor what is going on with me. I used to have constant daily headaches to the point where I thought I was having migraine clusters. I mean I really thought I was going crazy with all the pain and doctors had me on so much medication trying to deal with migraines and I went through a whole year and a half before I just couldn't take it anymore. after a while I even had some doctors accusing me of being a drug addict. I had my own people saying that I was "just making up excuses" and "I was lazy" and didn't want to do anything. I ended up at the psychiatric hospital and they put me on Haldol and that's when the headaches slowly started to become less and less. Thank God I found a good doctor who had enough sense to ask more questions and diagnosed me with BPD/DD.Now I know what they are and I don't freak out like I used to. I accept the fact that it's part of my condition. that doesn't make it any easier or less painful but I feel better knowing what's going on