😮 O M G! 😮

I am shocked! I tested Monday and got a BFN, and today was first day of my missed period so retested...I was so sure it would be negative.
I am beyond shocked!! Can't describe all the feelings I'm feeling happy, scared, surprised, nauseous lol  
Silly question but what's next? Dr Appt? Or do I wait a little bit since the lines are faint? Eeek!  This is so crazy emotional!!!