To TGI-ECT.
Phew! You've presented a range of issues, all complex and leading to others. Fascinating, and thanks.
Problem is where to start ...
With the positives, obviously. Taekwondo. So you have Martial Arts training to use. Great. The better MA schools of old were always "shop-fronts" for spiritual development schools, and maybe some still are, at least in the East. If you're willing to adopt this approach, I could make some suggestions that may be useful.
A second suggestion moves me into perilous ground. I have no qualifications whatever, lest of all in medicine. Nor have I any interest in "helping people". My main life-interest has always been in spiritual development, and there's only one place you'll ever get the help you need for that: within your own consciousness. However, external inputs are not only valuable, but essential, especially in the initial phases. So if you're willing to engage in a bit of "verbal sparring", I'm happy to practise a few kata with you and see where it leads.
Thirdly, this is not the place for such a discussion. It's supposed to be my polite and formal introduction to other members of the forum, but I've botched it so badly that it's already a lost cause. What I'd suggest is that you start another thread in a different section with an appropriate heading. It's purpose would be to discuss the situation with which you're dealing from the "third person" perspective - from a distance - and this for two reasons. It will help you to develop a "distance" from your experiences, and thereby perhaps see them more clearly; and it will allow others having similar experiences to join in the conversation and perhaps gain somewhat of value themselves.
The fact is that what you're going through is very common, especially in MA schools devoted to spiritual development. I could say that you have inadvertently "triggered kundalini" and are suffering the inevitable consequences; or I could say that you have "sprung a leak" in your "astral shell" with similar results. Both are valid approaches; both require extended explanation; both can assist in resolving the situation; and, ultimately, both are parallel paths to the same end.
However, there's another approach that may be more useful. I don't know what diagnoses you've been offered. One would be that you're suffering from a "mental illness", the goal of which would be to arrive at something in accord with DSM-5 (q.v.), and thereby select a drug to treat it. Beware, IMHO! Instead, I'd recommend that you look for material about the shamanic approach to "mental illness", which is that, rather than being a disease, it's a prelude to a significant step forward in spiritual development.
I'll extend the undertaking I gave above to nice_gaijin by not including any URLs in my own posts, but I invite you to do so for the benefit of others. I may recommend certain sites - in this case the Pleiadian Library or BibliotecaPleyades (q.v.) as it's known - as a likely place to find the shamanic material.
And lastly may I thank you for the compliment you have paid me in presenting this material for my consideration. I'll certain respect and be mindful of that in whatever follows.