I have been on Loestrine 24 for about two years and this past summer in August i went up north for 4 days and forgot my pills. during that time i bled. when i got home it had stopped...and ever since then i havent bled at all.since i screwed up my cycle, i started a new pack on that sunday like my doctor said. but its been 4 months and no bleeding. I get cramps and all that sooo im a bit confused....any suggestions?