I usually sleep next to my iphone but today woke up my head laying on it.now i have a weird sensation in my ear and right side of my brain as if it was heated. should i be concerned and refer to a doctor or nothing serious. worried about radiation ?

Probably ok: It's not possible to predict if one cell phone, machine, or appliance will cause a cancer in a particular person, unless that person is proven to be getting huge amounts of radiation from the appliance. Ideas on cutting down exposure to radiation are on the internet, such as: http://www.Electricsense.Com/1326/how-to-evaluate-your-level-of-electromagnetic-radiation-exposure/.