I have been on birth control (ortho tri cyclen lo) for about 3 months now!! I have never missed a pill and I take them same time every day!!.. But lately I have been having some spotting/bleeding for about 4 days now and menstrual cramps(I have 5 days until I get my cycle) and i usually have cramps around this time!!!.. I took a pregnancy test not pregnant(and I don't think I am)..I have Never had any spotting/bleeding like this before and its kinda freaking me out!!! it started light and now its a little heavier but its not my period??!! Help?? Do you think its something serious and has anyone ever experienced this before??....