Hi
I have a question regarding switching birth controls and missed periods
I recently had the Mirena removed on 6/17/2014. I rarely ever had periods on the Mirena. The dr. told me to wait until the next Sunday to start taking the pill (5 days later). During the month of taking the pills, I have used protection and only missed one pill. I'm on the last days of the inactive week and still no period. I'm having an increase in vaginal discharge also. My breasts are tender, but they have been this whole month. I have taken many pregnancy tests in the morning and they have all been negative. Should I get a blood test done? Or did I miss my period because of the transition from the mirena to the pill. I am worried about pregnancy but I can not think of an occurrence where this would have happened. Is it just a hormonal imbalance?

I also had about a week and a half of breakthrough bleeding right before the inactive week that was accompanied by slight cramps and lower back pain. Not sure if this was a period or not.

Any insights?

Thanks