(F 26) For a few day I have been having stomach pain, headache that was like a migraine, it felt like it wanted to brust, burning ears, nose burn and red cheeks but no temperatur. My chest has been feeling heavy but I can breathe fine although I have a irregular heartbeats. It lasted 3 days and today I felt good like I wasn't sick but now at 1am I woke up feeling like I couldn't breathe then started shaking feeling like throwing up and pooping, my stomach is hurting. What can it be? It is the second time having similar episode with stomachache.