Your medical records are not available to anyone without your consent (except in rare circumstances to law enforcement with a court order), and that includes other medical professionals. At most, the new psychiatrist would want to know what medicines you are taking or have taken in the past to better diagnose you, but he or she certainly would never ask for a previous doctor's report and you would not be obligated to provide it. Still, given your track record, it might be a great idea to see if you can continue to talk with someone about your feeling in a non clinical forum so that you can better formulate what is bothering you. If I had to guess, your mother dismissing your problems sounds to be extremely problematic.