Dissociative and triggered. Completely confused, help! *TRIGGERING SI*

[ShinyPanda]

I haven't asked for help in a long time.
I'm 26, mum, I have aspergers, and havr only cut 3-4 times in the last few years (started 14 years ago, it's been a long path)
I'm a chronic pain sufferer and after a really hard emotional day, I'm completely dissociative. Can't think about anything but cutting. My partner had just overloaded me with a ton of emotional stuff and my best friend has just told me he's in love with me.
I'm trying to care about it; work out the landmines around it I'll have to navigate, but I can't focus on anything but cutting. I am only able to resist because I know how my gf will react, and that she will need a lot of emotional support, and I just can't cope with it right now.
How do I bring myself back? Healthily deal with this? I can't even concentrate on anything but taking care of my son.
Any support or words of advice/encouragement would be really appreciated right now, I'm really struggling.
Thanks guys

[Eir]

Panda, I've read youngest about 3 times trying to think of helpful or supportive words
I wanna support you, but my head isn't in a great place. But I wanted to let you know I'm thinking of you, and that someone had read your post. I know vets isn't always the quickest place to get responses, and that can sometimes be disheartening
Do you see a Therapist? They might be able to offer skills. The only thing I can offer as advice on that I sometimes find that I can recenter myself to reality by snapping a hair band on my wrist. Thermally harmless sting is sometimes enough to put my brain back into gear.
Thinking of you