Hi, I have been on lo loestrine for a month and on the 2nd week of my new pack. When I first started the pill, I bleed the whole time except a day before I started the 4 placebo pills. I had protected sex on 7/2/15 and on 7/6/15 I started having an orangish discharge. According to my period app, my fertile days started on 7/4/15 and end on 7/10/15 and on 7/9/15 is when I ovulate. The next day it became more pinkish brown, the day after it was like my regular discharge mixed with blood, I used the bathroom again the same day and it s back to an orange discharge. I ve never missed a pill by a day but at most 4 hours. I missed a pill by two hours on 7/5/15 and by 10 minutes 7/7/15. I ve noticed minor back aches and cramps that go away in seconds or about 2-3 minutes. Is it possible I may be pregnant or is it breakthrough bleeding again?