I did not read all of the preceding posts. however, I have read many posts where women say they got pregnant WHILE on the minipill (the same one you are on). I was on the combination pill for probably 18 years. I got pregnant first month off. Actually, I ovulated a little later...like four weeks after going off the pill. Since I didn't get my period on time (and had negative tests) i just figured my body was taking some time to sort itself out. I went on with life...going out with friends, etc. Nope! my body just ovulated a little later is all...and I was soon pregnant.
