Hi. My wife had her last period on 6th of july. But she took primolut n tablet as we were going to holy trip. Again she got her periods on 10th july and completed on 15th. We had unprotected sex on 16th, 17th and 3rd of august. Now she missed periods till the date. Checked for pregnancy on 13th august at home. It was negative. Today she experienced increased salivation and nausea. Is she pregnant? Or the side effects of previously used tablets? What to do to hasten periods?