when did you get positive?

Anyone get positive test after one day late?? Af was supposed to start on the 5th , but didn't show . I usually spot 1-2 days before my AF , and that was also absent . Took a dollar store test yesterday(day of supposed af) with FMU , negative , then took a Wondfo test from Amazon this morning(one day late) , also negative. 
I had spotting one time only on Aug 27 . Since then , I have been more fatigue , my body tends to feel hot , I have sensitive nipples , and my body feels like it's aching , especially my lower back . Stomach pains every now and then . I also feel a little wet down there , as if af started or is about to start , and I don't even see a little bit of blood . 
Could I still be pregnant? Even after two negative tests???