I'm five days away from my period. I started taking vitex when I got it in the mail about a week ago. I don't know how long it takes to kick in but I've been feeling odd. I noticed for the past 3 days I've been kind of nauseous and crampy. This started after I had some bleeding that lasted about an hour and then stopped. I'm pretty confused but don't want to get my hopes up and take a pregnacy test.