Dear beeker: Usually symptoms do not come and go. Having said that, you are describing so many symptoms that you need to be evaluated. This may or may not be anything serious but with this many problems, the only way to know is to be examined.
There's enough going on that you absolutely need to be examined very soon. It could be many things, including infection, inflammatory breast cancer, or even something not very serious. But since the possibilities include things which could need immediate attention, you should not wait to get an appointment.