weird expiration date

This is my last try...I really need help and no one seems to know or care to help...My problem is simple..I went to quality vets web sight and looked up my lot number of stan 50..I found the lot number on the sight along with a date...My problem is the date on the web page and my bottle differ...The lot numbers are the same, but the web's date is july of 07 and my bottle says feb of 07..according to the web site no other qv bottle should be in circulation besides the ones on the web...That is all that was produced???I really need help...has any one ever heard of this..I would shoot a picture, but don't have the equip of know how to make it happen...The box look real..Wrapped in plastic and all halograms are there...numbers from box and bottle match..top popped off????looks milky and thick?? can anyone please help...