Hello. My last real period was from Feb 7-10. My periods are usually 4 days if this helps. On the 13th, I may have inserted a finger with pre ejaculation on it into my vagina. I took plan B on the 15th at about 8:45 AM. On the 21 to about the 23rd or 24th I had another "period". On March 4th I noticed some EWCM. I'm not sure if this means I'm not pregnant or not. My periods had been coming a little earlier and earlier. For example I got February's period in the 7th but January's period came on the 16th. So what should I do now? If my period is reset, is it too early for me to get a pregnancy test done on my campus on Tuesday (March 8th) or should I wait until much later in the month?