Hi S.
I have gotten pregnant twice on Birth Control Pills. I never missed a pill,ever, same time every day, not on antibiotics. Once on Ortho tri cyclin, and once on yasmine. I had an ectopic on the yasmine. I had no reason to take a pregnancy test with my 1st pregnancy because I still got my period, and I didn't think I could get pregnant on the pill, taking it properly. Honestly, a blessing in disguise. I continued to take the pill for approximately 3 to 4 weeks until I found out I was pregnant. No harm was done to my beautiful girl. When I was on Yasmine, I was getting my period, so I thought, right on time from when I should get my period, however, there was horrible pain. Long story short, it was a devastating loss for me, I had an ectopic pregnancy. I am now using Mirena, it's an IUD, and so far working very well. Its good for 5 years, if you wanna get pregnant, you just go in and Dr. takes it out. I did in fact take 3 pregnancy tests on the yasmine, because I just felt "weird", they all showed negative, and when I had the ectopic they guessed me to be about 4-6 weeks, maybe more. My advice to you is to call your Dr. Did you just start the Yasmine? I know when I first started it my period was all over the place. 4 days early one month, 4 late the next month, it takes a while to regulate your system. I would say to wait about a week and if you dont get your cycle, go in for a blood test, I am certain the pill will not hurt your baby for a short period of time, the Dr. told me they just dont want you to be on it for a while when pregnant because long term could cause damage. Like I said I was taking my pill until I was 6 weeks pregnant, and shes perfect. Hope this help a little.
Good Luck
If you have any questions about the Mirena, just let me know
C.