I had a reg period on the 4th June. Trying for a baby had unprotected sex during my fertile period. Nausea,headaches,metallic taste in mouth,very hot,cramping,sore back & tired since. Preg test neg 5 days ago. Started my reg period 29th June (lighter then normal) Still have nausea,headaches,cramping,tiredness & metallic taste in mouth. Pregnant? Or just in my head :)