Yes. It does sound like you “overdosed” — meaning you used too much THC for your body to handle. Although marijuana is being legalized in many states, that doesn’t mean that it is totally harmless. The impact on a person depends on a lot of factors including how much THC is in the marijuana used, its strength, and how often the person uses it. It is also possible that the THC you used was mixed with something else. If you were drinking at the time, you put yourself at further risk for a bad reaction. Common signs of using too much THC at once include symptoms like you describe: confusion, anxiety, paranoia, panic, fast heart rate, delusions or hallucinations, increased blood pressure, and severe nausea or vomiting.
I’m not an expert on the effects of THC so responding to your question is a stretch for me. I can only guess that it’s unlikely that the THC you used in your tea re-triggered the effects of the original “overdose”. (It would be wise to see a substance use/abuse specialist to be sure.) Since your blood work came back as normal, I’m also guessing that it is okay to rule out some other substance being present in the edible. It is more likely the tea re-triggered your feels of being out of control.
You say you are a “control freak.” For someone like yourself, it’s not unusual for a panic attack to evolve into a panic disorder. Panic attacks are extremely frightening. Symptoms are much the same as those for THC toxicity: tremors, rapid heart rate, nausea, and vomiting. Many people have only one or two panic attacks in their entire life. But for someone who hates loss of control, the fear of having another one paradoxically can trigger more. The THC in your tea may have caused just enough similarity in feelings to the severe episode that you became “panicked”. Your fear was such that you couldn’t even sleep — which, unfortunately, made things even worse.
The good news is that panic disorder can be effectively treated with cognitive behavior therapy (CBT). I urge you to stay away from THC and to find a therapist who is both an expert on the effects of THC and experienced with CBT. With guidance and support, you can learn how to manage feelings of anxiety and fears about loss of control.
I wish you well.