How long will abdominal pain and diarrhea last after taking 3 doses of Moderna?

If, in fact, abdominal pain and diarrhea are caused by the Moderna vaccine, then I am afraid that it will be very difficult to specify how long this situation may last, because they are not yet sufficiently studied drugs to assess the possible extent of the side effects they cause. They are simply on the market too short. I encourage you to consult a doctor and perform an ultrasound examination of the abdomen and stool culture. I think that they will allow you to outline what the problem arises from and help determine the possible treatment. It would also be good to report the observed side effects. By reporting side effects, you help other patients, including your loved ones, who may also need the same medicine one day. This step also allows you to gather more information on the safety of medicinal products and update data on them. We wrote about how to do this here: https://www.gdziepolek.pl/artykuly/jak-i-dlaczego-zglaszac-dzialania-niepozadane