I'm 26 years old and I do have psoc but I had my daughter 9 months ago and after delivering her vaginally my periods were spot on until about three months ago. My last period was November 19th and then light light spotting (pink) only when I wiped. My stomach has started to get bigger as if I'm pregnant I'm having cravings I smell everything my nipples are tender and darker than normal I'm exhausted all the time and I've taken 5 home test they are all negative. What other possibilities are there if I'm not pregnant?