chances that I am actually pregnant?!?

Hello everyone!

so i had sex on october 1 and 2 not realizing that the first was the day i ovulated. i wasnt keeping track of the days because we werent really trying, if it happend it happend was our way of thinking. anyways, its now oct 7th and ive been feeling pretty different lately, my back is sore, i feel like i could gag and throw up at any point, my cervical discharge is white and creamy with no smell but there is a large amount of it ALL the time.. i took a test on october 6th and got a negative (i know it was probably too early too tell) but ii couldnt wait. how much longer shoyld i wait before i take another test? is this all in my head? i havent missed my period yet as it isnt due until october 13.