I started the Yasmin 21 days contraceptive last week in order to delay my next period (on account of an upcoming vacation). However, I feel like I may be breaking out on my face since I started it. I plan on stopping it completely to not mess with my skin. Since I only took it for a week, (and I've never taken contraceptives before) could it cause acne? And if I stop immediately, will I mess up my system? Please help!