Anybody out there?

Courtney
Well, I'm a 34 y/o and have never been pregnant before.  My hubby and I were seeing a fertility specialist when some life altering things happened to me.  I unexpectedly lost my sister and we found out that we had to move out of house and bought a new place for the first time.  It's been a year since I have been back to the dr.  We were going to go this summer.  I recently started to take up exercising and drinking less soda.  I have done this for one month.  Nothing vigorous.  Just a few DVDs 3 times a week.  For the first time Ever my period is really late.  5 days to be exact.  All negative tests.  Went to my family dr today and their test came back negative.  He said I may just skip a period this month.  Ok.....but my body has never done this before!!!  I have heard that exercising and extreme weight loss can cause miss periods.  I have lost about 5 pounds ...maybe.  This is driving me nuts.  Has anyone ever had anything like this happens to them before???  I have had a little cramping and I feel like I'm going to start and then nothing.  It's beyond frustrating.