I purchased an ingredient kit from my local hbs shop yesterday and when i received my packet of dry yeast it was hard and still vacuum sealed, however today i began brewing and i took the packet out of the fridge and i noticed it was soft. It still seemed sealed, i didn't see any holes or tears in it so i pitched it anyways. On the packet, it says do not use if soft or inflated. Why would that effect the yeast? Is my brew going to be ok? I probably wouldn't have used it but since its a 45 minute drive to my hbs store i did anyways. Any comments would be greatly appreciated.