I've always been able to drag myself through work during horrible feeling, sensations, stress and anxiety. I know I'm a good, honest worker with a "handicap" of sorts that is fixable and workable. I hope you can achieve this level of coping! I know you must be feeling even more stressed since you're in that "probationary" period. When you feel good, do your job well and allow yourself room without taking advantage when you don't feel good. I suspect you're a great worker.
I'm in a slightly different boat- everyone at work knows. I had a huge panic attack at work in front of everyone and they called 911 and I was sent to the emergency department totally against my will (apparently no one there has seen or can recognize a panic attack). For at least a week, everyone kept asking me if I was ok, even those who weren't at work that day and it still crops up; I know people talk. It has been an embarassing nightmare. I work in the medical field in a high stress environment where personalities are large and tension runs high... not fun to be seen as weak, not in control, inadequate, incompetent. However, the people that matter at work are ok with me, so that's all that counts. I often have to remind myself of this!