I agree that the answer is to go see a doctor. The problem is that since it is not well understood in the US, they don't give much good advice on this issue. The quick answer is -- reduced exposure will help you feel better. Of course radiation from wifi and cell phones and cordless phones -- is everywhere today -- but the important factors are: proximity and strength of a transmitter and duration of your exposure. The final factor is your own general health -- if you are eating well, sleeping, exercising etc. you will likely have a better resilience than if you are exhausted, under-nourished etc.
The anecdoctal evidence is building all the time (for example, in this forum) and literally hundreds of doctors are researching the issues of non-ionising radiation today. If you don't want to beleive it's not dangerous, don't believe it -- but I don't get the need to scorn those who are suffering. No one would make fun of someone with airborne peanut allergies -- "The particles are too tiny to affect us!", "When I was growing up, not one person ever had airborne allergies!" "It's just a peanut!" But somehow, radiation -- which EVERYONE agrees is harmful at high levels -- simply cannot affect people at low levels?!?! I should add that if you want to follow the money -- there is a lot of money behind the argument that there is no harm in this kind of radiation.
There are numerous examples in history of how people used new products or "tech" that they didn't understand was harming them -- until they did understand. Romans had lead pipes for plumbing. Cigarettes were beleived to be GOOD for your health. People used to x-ray their feet at shoe stores as a cool way to measure their feet. Use of Asbestos in building. What can I say, doctors and scientists thought these things were okay -- then anecdotal evidence increased, more studies were done....and we learned!
I'm saying, first hand, that the radiation affects me -- I get almost immediate pain in my head, faster heart beat, irritability, foggy minded and occasional skin rashes. After I decrease exposure to the best of my ability for a few days -- all the symptoms reduce and then go away. I understand the need to say: "But you didn't consider...." or "It's probably something else...." But I am a reasonable person who has been living with this for 10 years. I think cell phones are amazing and I have nothing against iphones per se. They just make me sick.
Here are some sites to check out for citations of current and recent studies on Electromagnetic Sensitiivity:
Canadian site with lots of information about electromagnetic pollution: http://www.weepinitiative.org/livingwithEHS.html
British site, Powerwatch -- researching the links between electromagnetic fields (EMFs) and health risks for about 25 years : http://www.powerwatch.org.uk/health/sensitivity.asp
Time Magazine movie on Electromagnetic Hypersensitive people: http://time.com/golden-cage/