My DD16 has experienced nausea for the last 3 months. She is slim but not underweight. Otherwise heakthy. She feels sick all of the time. She has not actually vomited but feels like she is going to. It seems worse when she eats, so very rarely finishes a small meal. She says she is not anxious and that she wants to eat. Pregnancy test is negative, no boyfriend etc but Dr tested to rule out. Dr took stool sample which was clear, and prescribed a medication to reduce stomach acid production. She has taken this for a month and it is no better. I wondered if it was linked to college/exams but it's the holidays now and it's still happening. She has been taking Propranolol 40mg for 14 months for migraine. She didn't get any side effects when she started taking it. Migraines have drastically reduced but I'm wondering if the medication could be causing the nausea. Any ideas please?