I've been on Yasmin for about 4 or 5 years now. I've just recent...

I've been on Yasmin for about 4 or 5 years now. I've just recently notice a decrease in my periods (since about October '06). It would only last for about 3 days and was very light. The past couple of months, I have had NO period. I'm not pregnant (done the tests), and I'm extremely worried about what's going on. As much as a period is a burden at times, it makes me feel better when I actually have one. I have an appt. with my gyno at the end of June, and am supposed to start a new pack today, but am seriously considering getting off of it. Any advice? Should I be as worried as I am?