Freaking out! Experts advice needed

I have been almost a year taking Yasmin 24/4. With this it made me get my period on time, every Wednesday when I should start the new package, I got my period. 
4-5 months ago my bf and I stopped wearing condoms but we would pull out always on the right time. 
Today is the second day I should be on my period but nothing is happening, I took my pills on time, I did not missed any pill. I have no PMS not pregnancy symptoms. Why am I not getting my period? 
In April I had sex on the 6,8,13,22,27,28, My period was due to May 6th (had sex again) and I took my pill again as normal, starting a new package even though I did not bleed at all.
So yesterday and today I looked for my CM and today I got a little red dot on it. 
What's happening? Please help