Ativan is really strong, and is usually used for 'acute' (i.e. short-term crisis-type) episodes. It'll probably be real helpful to tide you over.
Racing thoughts are a common characteristic of bp, and may take a little fine-tuning with meds to get under control. They can be a real pain, huh?!
CT scans aren't used a lot because they're more expensive than most people can afford & are just becoming useful as a diagnostic tool to determine bp & schizophrenia.
Your outpatient counselor (I hope a well-qualified therapist - handling bp is beyond many counselors' scope) may well know of a good psychiatrist or several. Your regular doc may have heard good things as well about someone, from other patient(s). Check with as many people as you can, locally. You may actually be better off going to a psychiatrist first . . . just my opinion, but honestly your counselor isn't in a position to make a diagnosis. Although they're almost a necessity (I know it is for me, to help cope & deal with past problems, other issues, etc.).
Hope this helps & you get some relief soon! MindWandering