@sheila7a Stomach pain, nausea and other unpleasant gastrointestinal side effects are part of taking the Big3. It took my body several months to adjust, using probiotics daily, taking the meds at bedtime, numerous tiny meals throughout the day, ginger chews and ginger tea, sometimes just a nap...
How long has it been since you started? Have you talked to you pulmonologist about your symptoms?