Need advice. :(

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!? :(