I took Methylcobalamin B12 for last two days and now I regret it!

I took 5000mcg on the first day, felt more happy and energetic. Also felt some pain in body a few hours later (I have fibromyalgia, mercury/pesticide poisoning and so my body is extremely weak, also had Bipolar disorder, still have Aspergers, gut problems, etc).

I then took 2500mcg the following day, and I became depressed (complaining about events that happened during the day), then had an increase in sex drive, then felt like sleeping early. I then had some bad dreams (which I haven't had in a while).

I am now very worried .... do I now have methylmercury/dimethylmercury in my brain?

What is the best way to remove this? Does Miracle-Mineral-Supplement (Miracle Mineral Solution) help since I'm planning to get it anyway before trying the Zapper on parasites?

Which type of B12 should I use then?

Interestingly, I just realized my boyfriend also had these same symptoms since I met him two years ago. Does he just happen to have neurotoxin poisoning as well??? He does not have mercury symptoms but he definitely had Arsenic (anger, depression) and Cadmium (loss of sense of smell) symptoms before chelating from gut with Quicksilver IMD and Enterosgel.