Anybody?

I took a pregnancy test almost a week ago from CVS and it was positive for a few hours. A day later the positive line had completely faded. 3 days after i took the first HPT i took another one from the dollar store and it was negative. 😩 Has anybody experienced this berfore? If so were you pregnant? 2 weeks after my last cycle I completely lost My appetite, can only eat soft foods or nothing will stay down, have been cramping not nearly as bad as I do when im on my cycle but theres definately some cramping. Also, at night ive been sweating excesively which never happened before, my lower back has started to hurt in the past few days and my breast are so sensative. On top of that I am supposed go start my cycle in two days but two days seem like an eternity.