von,
Yah, I'm working as well. Bad ms, puke, bloat, no appetite, gastric etc, but thankfully not so bad that requires jab. Rejected anti-puke med gynae offered as don't want to take meds unless it's really required. Back pains, prob from all the pregnancy hormones, round ligament pains from the expanding uterus.
I just comfort myself that at least those are signs the baby is doing ok. Try to enjoy the days when the MS is less, eat more, rest more. Look forward to feeling the baby move and knowing that the MS will go away one day. And comfort yourself that there are many other working mothers who are going through the same thing so you are not alone in this. And of course, it helps if you have a considerate, understanding and comforting husband around