Missed Period

So I’m starting birth control after my next period ends. The only problem is my period should’ve started on Tuesday and it’s still no sign of it coming. I usually get bloating, nausea, cramps with a little bit of spotting before it starts, but no changes have been made this month. My period usually starts a day or two early so this isn’t normal for me. The anticipation is killing me especially because I don’t want to ruin a nice pair of undies when it finally shows up. I guess my question is, how much longer should I wait for it to arrive before seeing my gynecologist?