It sounds to me that your Eustachian tubes are blocked. These are the tubes that link your ears to the throat (the ones that allow you to go pop when you fly to get air balance) When they are blocked you get sever ear ache and it is possible you have an ear infection. My advice is to see your GP asap and let him have a look in your ears/down your throat. Sometimes a decongestant (eg Sudafed) can help, but since you've had a rash etc in the past week I think it better if you get checked over again.