I think talking to a therapist would be a great idea as well. The BPD issues dont get better with medication and I agree with you that the issue sounds like it stems from it.

As far as dealing with the lows at work, I have the same problem but not triggered by events. It is from being depressed for myself. When I am working an evening in that state I have a space to myself for breaks and I spend my coffee/supper with my head down on a desk, soft music in my headphones and a timer on my phone just in case I fall asleep. If you have personal space that allows for that it is something you could maybe try.

Not eating makes me very sick. If i dont eat properly I throw up a lot. During mania it doesnt bother me and I actually feel good about how little I eat and how sick I am while still having crazy energy and losing weight(I dont need to lose any) During depression I sometimes eat a lot more and sometimes just lose my appetite but the same thing happens, I throw up a lot. Not eating definitely can cause nausea and vomitting. Get into a healthy eating routine if you can, it should make a big difference. Healthy food, eating more often, Nexium and sometimes gaviscon keep my stomach in decent shape. I have really hurt my stomach with alcohol abuse and excessive amounts of pills that I was not supposed to be taking though so I do have some stomach issues.even when I am stable.

We all desire stability, I hope you can find it and get back to enjoying your days. It sounds like you have some good things in life to enjoy