I'm meant to take doxycycline before taking Yaz 'the pill' which both help to clear blemishes. I'm worried about starting to take Yaz a week before my formal but the doxycycline is meant to help? Should I wait until my next menstrual cycle and retake the doxycycline before Yaz? Or risk bad break outs and flakey skin for my formal and keep going with the tablets? I've been looking at outcomes of Yaz but I'm not aware if they used the doxycycline before hand?