So I had my period a few weeks ago and it was a few days shorter this time.. So in the middle of my ovulation  my nipples started feeling really sensitive and they still do my stomachs been feeling funny and I've had really bad indejestion and very moody so I take a pregnancy test and a BFN I mean I'm okay with it being that right now I'm just a little I don't know confused on why I'm having these symptoms. Help?