I've posted on r/anxiety and r/bipolar with no help, so I deleted them. Can someone here respond to my question?

I am willing to admit I need help but don't know what is going on. Is a therapist or psychologist the right person to see? If so, what do I tell them? Does their specialty matter? I've got one appointment with Employee Assistance Program at work on Monday but...I dont think they can help. Everywhere else is booked solid for 2 months to two years or just a bunch of "we will call you back."

I will be going back to work on the 29th and my supervisor already wants to meet...I need to have something to tell them. I left with little notice in the middle of a major project. They have the right to be mad...

See below:

I've had 3 rough patches (2005-2007) (2018-2020) and...I don't know anymore to now because I am fine/bad for short bursts (for example, I could say mid-July to now exluding the first week of August) but it was just a continuation of the first two weeks of May when I suspected my coworkers wanted to replace me with the intern sho was passed over for me to get the job.

 I took a month of FMLA until August 29 because the stress from my coworkers trying to get me fired was influencing my bipolar amd anxiety, and I recognized I needed to take a break. It's been getting worse with random emails from them. I am admitting it, because I am spending too much time trying to see if they are meeting and talking with each other before sending emails by comparing their schedules.

My wife said I am a mess and doesn't know what to do: too lethargic, cold, flat, and frusterated easily. She also is tired of me talking to myself and twitching (no voices....just tics that got worse over my 20s) or saying things to make her mad (it's not intentional and I always forget what I just said).

Thank you for your advice.