What could this be? Asked in Women's Health, but no response?

I ovulated on the 18th of May, so my period was due the second of this month. For the last three days I've been cramping. My breasts are swollen and sore beyond belief. My appetite has been off the chart and I've been craving pickles for a week. I have bad headaches daily, have been so tired it's hard to get out of bed.I've been overly emotional and I have had this odd taste in my mouth for a week. It's like an ammonia or metal taste. And I've been having nausea in the evening toward bedtime. But before you say I'm pregnant, I have to tell you my husband had a vasectomy last year. What else could be going on here? I'm getting agitated. Thanks.