I hate to break it to you, but you're being bombarded with electromagnetic waves constantly. Television, power lines, radio, cellular, WiFi, Bluetooth, basically anything electrical generates electromagnetic waves. And those waves are being transmitted omni-directionally, going through wood, masonry, glass, flesh, and metal to varying extents.
Because Bluetooth has such a short effective range, it means it operates at a much lower power level compared to most other signals, like WiFi or cellular which you also have inside your phone. The only way you're going to escape such signals is to turn your home into a Faraday cage, eliminate all electronic and electrical sources inside, and never leave your home. Because once you do you'll again be bombarded with electromagnetic signals.