Why was I so explosive?

I have spent the past few years being completely invalidated by several doctors, dealing with SIGNIFICANT medical gaslighting.  Physical ailments were quickly dismissed as relating to mental illness. I was coerced into taking medication with the promise that I can stop if I can’t tolerate it.  I make the full expected effort and explain the adverse effects to be told that I can’t possibly be experiencing that: this early; at such a small dose; to the extent that I’m experiencing; and it must be from something else.  Abnormal bloodwork pointing to anything medical somehow gets pushed to the bottom as secondary to the psychiatric experience rather than a potential trigger. Yes, my response may not be appropriate for certain situations.  I, however, am completely justified in the invalidation  metaphorical pressure cooker continuously popping.