Has this happend to any of you....

My TOM is 3 days late. Has this happend? It's incredibly unlikely that I'm pregnant, so I'm pretty sure it has to do with the diet switch. (BTW my ave. was down 1 lb, YIPPEE!!!!) but when I started Adkins I was 2 weeks early for several months and then last month was back on schedule and now I'm late. Very confused....please let me know if this is "normal"?