phantom pregnancy??

Is it possible to have a phantom pregnancy? I have had the sence of smell before, and thought, just maybe. But then nothing comes of it. I have been pregnant before, and the last couple of days, it feels like something is growing in there, like it did the last time I was prego. However I had my period almost three weeks ago, and just had my ovulation. So it would be way to early to feel anything.  I have been trying for over a year now, and I feel like because I want this so bad, that I may be having some phantom (fake) symptoms.