Need advice. :(

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So I've taken multiple pregnancy tests, all negative :( I'm 13 days late with my period. Having all symptoms of pregnancy: cramps, sore nipples, white discharge, peeing more than normal, headaches, back pain, major bloating and some occasional nausea. 
My so had intersperse on the 7th of this month and the 9th . Am I testing too early or is something wrong??? 
Advice please!? :(