On Birth control, but missed my period?

I also take yasmin which is a combined pill. According to the book you can take it up to 12 hours late and it will still be effective. Totally missing pills at the beginning or end of your pack matter more and taking the pill can lead to shorter lighter priods. However the pill is not 100% effective. It is possible you could be pregnant. I suggest you take another test in about a weeks time and see then. If its still negative then i suggest seeing your doctor as yasmin may not be suiting you-sore , yeast infections etc are possible side effects, which you may not experience with a different pill. Prob a good idea to see the doc anyway if you have an infection-also need to treat your husband as he could have it too if you have slept with him since you had it....or he could have contracted it and be ping it onto you. Dont panic-its nothing that cant be sorted!