hey i started taking yaz and will start taking my third pack on sunday. I have yet to get my period yet, but experienced a lot of breakthrough bleeding earlier in this month. I have no signs at all of pregnancy but i have no idea where my period went! I'm getting so nervous and don't know if i should take a pregnancy test, but they say to only do that if you have any other signs... has this happened to anyone else? (not getting a period one month on YAZ) or is this not normal and i should take a test?