Any idea whats wrong with me? I really need to know, i feel so ill.?

Sorry to hear you are not well it is the medication you got from the chemist that caused the breathing problems and your throat to swell up its caused with an allergy to the medication, DONT TAKE ANY MORE but do go to your Dr's ASAP and get a prescription for your illness and tell him or her about the side effects from the medication from over the counter.