2 days late

My period is 2 days late .. took a test yesterday and it was negative .. keep cramping on and off and not every day , I ALWAYS spot 2-3 days before my period and haven’t spotted once .. no symptoms of pregnancy really only have a mild headache for a short time pretty much everyday and a lot more vaginal discharge than i usually have . Not sure when I ovulated but my periods are always every 28 days and I’m 9/10 times always on time . Should I test in a week and see what happens ? I want to call my doctor but I feel they are just going to say wait till it show up