If ur pain is that bad, I would just go to A&E, dont call an ambulance though. I cuda waited about my abdominal pain that i went to A&E for a couple of wks ago but the pain was getting more frequent and i couldnt sleep. They did an ultrasound straight away and xray, and kept me in overnight to see a consultant about any other tests i might require. If i went to a doc i woulda been in agony for weeks on end drugged up to the hilt and waiting ages for tests. A&E wont be angry with you, coz if ur in pain u shud see sum1 urgently if its not in a non-life-threatening place like a leg or arm! Maybe if u just go down there and see sum1, explain ur having extreme pain in ur throat! and have been getting severe pain in ur stomach. Say uve seen ur doctor and he has referred u to ENT but the pains just got worse since u went and u feel u cannot wait weeks/months for ENT coz its so bad u cannot even sleep! Even if evrything turns out ok, they can probably prescribe you the best meds for you pain, including sleeping tablets and muscle relaxants if they feel u would benefit from them. Good luck