Hi Dear !! Thanks for your query to HCM . Read and reviewed your query and health concerns. IN the given situation of Yours,You seem to suffer from-Sinusitis with GERD with acid reflux. As the pain increases with stress and is referred to back and is connected with discomfort in neck,it seems from -Gastritis with GERD accompanied with Sinus Congestion over last week. Its the gastritis and GERD with acid reflux which is causing more chest pain, which increases on deep breathing,or the chest sharpens with difficulty in breathing. Remedy- Consults with Physician to rule out IBS and it ccompanied causes is advised. Treat the GERD and acid reflux-with PPI-prilosec(omeprazole) with gastrokinetic-domperidone- Tab Ciplox with Metronidazole-1 x 2 x 5-7 days to control GI infection and sinus infection Tab Claritin-or Loratidine-D x 5-7 days to control allergy and congestion. Any other cause of IBS with Constipation-like Ulcerative Colitis/ Crohn s/ Internal piles/ Fissure in ano with sentinel piles need to be ruled out. Bland diet/ non-spicy diet / plenty of fluids This would reduce chest pain and control breathing difficulty. Hope this would help you to plan further of this complex illness of yours. If need be, update any health issue 24 x 7 by a direct question to ME, at following HCM link- Dear, if satisfied,Don t forget to close this query with YOUR pleasing feedback comments to rate this reply and service, to boost the morale of incoming Emergency patients like YOU, at HCM services. If you want to update more details and ask more update queries , You are most Welcome herewith !! Good Day!! Wishing Good Healthy Life in time to come!! Dr.Savaskar M.N. Senior Surgical Specialist M.S.Genl-CVTS