Feeling like your pregnant but negitive results.

Hi just wondering has anyone actually been pregnant but had negitive results before 6 weeks? I had my last period at the end of April, im now 5 days late. 2 tests have come back negitive but one had a faint positive.

Ive been sick my boobs are sore, ive been having Miagrains for days.. i had some sort of spotting (brown) for one day on the 16th of this month too..

Anyone had anything similar ?

Thanks