I am having light spotting and slight cramping for the last 3 days. I thought i started my period but now i noticed im not even halfway filling up a tampon. Is it possible i could be pregnant. Its been 29 days since i started my last period...so i should be starting any day now? I did happen to miss a couple pills not in a row though, and did make up for it by doubling up. Should i wait to take a pregnancy test?