Which is it..?

So..I'm living in a heat wave here in saint louis and past three days i'm had a headache from forehead to side/temples and upper-back ache (pulsing) and finger and upper arm joint pain that's also in my legs. When I bend over my lower back kind of hurts- I also have a pimple at the bra clasp line..maybe it a in grown hair... I o,nly drink tea or chi tea..not really water..upsr set tummy/smal small cramps could that be the cause of my symptoms? The lack of water/heat wave/in gown hair/pimple? Also suppose to start saturday. No other sysmptoms. 

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