Chronic heartburn and dizziness

So. . .

I have chronic heartburn (which I never have had in my life), dizzyness, random nausea, strange desire to drink milk (which I hate), my breasts seem larger, my hands and feet are swollen, I'm tired all the time, and strangely my abdomen feels heavy and I've had odd cramps for the last month.

Now, to me, all of these sound like early pregnancy symptoms. EXCEPT hpts are negative and I've had my period, the last two were odd, but still. . .

Is there anything that can seem like a pregnancy and not BE a pregnancy?