My boyfriend and I and had outercourse 3 days prior to my expected period. During this we got a bit too carried away and I am very positive that I was exposed to pre-ejaculate (no actual ejaculation). Out of precaution/panic I took a plan B pill about 32 hours later. Now my period is 2 days late and I am experiencing some light cramping with clear spotting. What is the likelihood that I may be pregnant. If this information helps, my cycle tends to be about 25 to 28 days apart and I'm pretty sure I wasn't ovulating when this occurred with my boyfriend.