How long should I wait to test?

Lillo
So I'm 10 DPO and have been having unusual for me symptoms the last few days...heartburn, headaches, back ache, tender breasts, crazy appetite, constipation. 
The only symptom I usually have pre AF is an increased appetite. 
I'm either driving myself crazy before a let down and a BFN, or this is our month. 

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