Whats going on with my body??

Okay I'm super hot all of a sudden/ look super flushed, my Tatas are killing me and I feel like my legs just want to run off my body. Af is due tomorrow.. The only symptom I ever get is very achey legs the day before. I've had a few very faint positives but after that they were all bfn.. I don't know if I should test tomorrow morning of the day after? Any had these symptoms that resulted in a bfp?? When did you get your bfp??