My cycle runs every 28 days and for the past 5 months It has came RIGHT on the day 1st thing in the morning. Well, I am now 4 days late and have mild cramping here and there and still no period as well as 2 negative urine tests. (one afternoon and one morning). I have been VERY emotional for the past week or 2 and wasnt sure why. I have a wedding date set for September 5, 2009, so we werent trying to get pregnant. If it happens cool, if not, cool. We had sex on February 8th the day after my birthday not thinking I was ovulating at the time. What should I do, are there other things that could make me not have my period and still cramp. What should I do and should I take anymore tests???When?? ? ?