Overmethylation?

So I had the symptoms of being an under methylator and was suggested to take the supplements methyl B12, folate, B6 and betaine/tmg which I did for a few months. Methyl folate at 400mcg, B12 at 1500mg, p5p/b6 at 15mg and betaine at 500mg.

Got a bit better for a while then all of a sudden I started having hypoglycaemia, insomnia now I’m stuck in this fight or flight mode almost permanently where I keep having panic attacks going to ER thinking I’m having a heart attack because my chest hurts and I feel in danger.

I’m constantly activated, when I walk around in public I get this random sense of danger at times in my chest, I have pains down my body and in my chest, I get headaches, I’m tired all the time but get random spurts of energy to do things but never complete them and then wanna start something else.

On my blood tests I’ve had done in the recent months I had Lymphocyte count: 0.85 109/L, which is slightly under the range which is 1.5 and Total white cell count: 4.20 109/L which is on the low end.

Plasma active vitamin B12 level: > 128 pmol/L Normal range: 51 to 128 so out of the range but I was taking the supplement at the time so that would make it logical it would show high right ? Serum folate: 5.7 ug/L Normal range: 3.1 to 20.5

Not sure if those blood results mean anything to anybody but this is horrific and I’m really struggling had suicidal moments and really don’t know where to go from here.

Been supplementing niacin sporadicly and glycine but I don’t really wanna mess around with supplements much more in case of messing anything up. I don’t really have a dr to talk about this to but the hospital say my heart is okay as my heart enzymes are normal and my ecg was normal but my chest feels constantly sore.

What can I do?