Pregnant but negative tests?

The last period i had was December 5th and lasted about a week and a half. In mid december i had bled lightly for a couple of days and i figured it was because i had stopped my birth control. Well i now feel sick to my stomach, bloated, extremely tired and hungry, needing to pee more, and my boobs are huge. Not too sore but my nips are definitely super sensitive. And my lower back has been absolutely killing me. Also i have a yeastie and i never get those! Still have not had a period and took 2 EPT (blue dye) and both were faitnly positive. Took 6 more pink dye tests, FRER, Dollar tree kind, and walmart .88 cent tests. All negative. Has this happened to anyone and still been pregnant?