Could I be Pregnant?

[Kay_Rae]

Hi, so I had my last period April 22nd through the 26th then on May 4th through the 7th I had bleeding again with cramping but not as heavy. Then May 22nd through the 24th I had very light spotting light colored with minor cramping. My period was due on May 28th but it never came. Sense then I've been overly tired, bloated, white discharge so heavy sometimes I feel like I started my period but haven't, slight cramping on and off through the days when I move around a lot. I am always hungry but when I go to eat I loose my appetite right away, my nipples itch some also. My uterus area in the last day or so has gotten very bloated more than usual before a period and I have been having more minor cramping lately nothing like my period cramping but still nothing only white discharge!! I have taken 3 home pregnancy test in the last month but all negative! Help please!!? Any ideas what is going on or if I am possibly pregnant!?