why am I not getting pregnant.

K
Me and my husband have been trying for a year now to concieve and nothing is happening ...  I always keep getting all the signs to it but then it seems like my period comes.  
My boobs are huge right now bigger then ever they have been sore for almost two weeks and apparently I started bleeding light today with mild cramps and my period came a week early... any ideas or suggestions ? 😟 False hope is so sad.