So I started birth control this month it's the ortho tri one and I took it the Sunday after my period ended. I took it all month never missed one i took them all with in a 3 hour spand. But now I'm on my 2nd placebo pill and still haven't gotten my period I have a little discharge white but no period I had a few cramps not as bad as usual and pms symptoms but no period. Could I be pregnant? Is this usual? Any advice would be great!