Why are women so freakin emotional???

I wish I knew the answer to this question...things have been fabulous...Dan and I are getting married in just under 6 weeks (Hooray)!! We got the announcements out this afternoon, my dress is hanging in my closet next to his brand new suit, my shoes have been ordered (though I don't know how my feet will survive the 4" heels), the reception is basically done for Boise and the one for here is pretty well...well kinda under control. With all those great things taking place, can someone explain to me why I am over reacting and in tears over something that could be a big deal but isn't?? When I say tears...I mean uncontrollable, wracking sobs? Poor Dan isn't sure what to do, or say...and even my explanations seem paltry and juvenile...Any suggestions on how to stop the tears before they start???
I can only hope that sanity will prevail, Dan will stick it out...and 42 days from now we'll be happily on our honeymoon.