Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. * As per my clinical experience, the pressure in abdomen in your case is seemingly related to alterations in gut flora, digestive enzyme disturbances or else. * I would recommend to undertake a basic ultrasound evaluation of the abdomen & pelvis for further management guidelines. Hope I have answered your query. Let me know if I can assist you further.