Thanks girls!

Mini - that's great to read. I'd Googled a bit but most sites said 3 months. My OB said to ignore the dates and continue to use it unless it smells bad, especially as I'm only using it for emergencies. I guess it doesn't really matter if my EBM has lost some of its nutritional benefits as DD is drinking from the breast most of the time so she's getting plenty of the health benefits from the fresh stuff, IYKWIM.