hi @behindthebeard
welcome to the forums, you're a valued and welcome member here 
I am a major bridge-burner & have rage issues so you are doing very well if you can partner & have a child. I find it difficult to have commited relationships. Congratualations on your son, that must be very inspiring to be a parent, I'm just an aunt but with my complex mental health issues that's about all I can manage. I put as much energy into being a supportive aunt as I can, as I know that kids absorb everything like a sponge while they are developing and it's so important to mirror back appropriate emotions and so on.
It is hard to be emotionally stable and reliable, someonbe else's rock, when you have bpd traits. I found medication helpful but still struggle with relationships - especially family relationships, they are complicated. I'm trying to support my brother with his recent psychosis (and his young daughter) but it's hard work. It's great that you are trying to be reliable, especially with a new born baby.
Do you have any supports in place like a psychologist or support group or perhaps a psychiatrist? I ask because my psychiatrist is a great support to me, he really understands my plight and wants only the best quality of life for me. Like no-one else.
I wonder if some others with BPD on the forum may like to chip in, @outlander woudl you like to reply & do you know anyone else on the forum who may be relevant here?
@behindthebeard it may be wise to hold on to your employment. I have been unemployed for 7 years due to my mental illness and it's really hard. So I encourage you to keep your employment if you can.
Yes, I find that it's easy to identify a trigger. I react with nightmarish rage/psychotic symptoms quickly and cannot come down from that for days. It would be good for you to be able to identify triggers. Then you can avoid them or learn how to respond to them - what are your recent triggers? Do you have any help from a psychologist with how to manage this reaction...with breathing or mindfulness?
Don't lose hope @behindthebeard there are ways of coping with BPD and with being triggered. You are not alone. Lots of us here at the forums experience with being triggered & with BPD. Let us know how you are going and if you want to tag someone just use the @ symbol before their name & they'll be notified.