HI Well come to HCM Your query and concern appreciated, these are three different conditions one is emotional stress second is sciatica, and third is stomach upset these three are not connected with each other and in my opinion sciatica would demands the medical attention, else the emotion stress can be minimized with moral support, stomach upset may required exact symptoms, and underlying cause, because stomach upset may not create any clear sense as long as the illness is concern, it may be dyspepsia, nausea, diarrhea, distension, and other some time may be infection, and for all of these differentiation is must, hope this information helps.