I was about to thaw out this bag of milk when I noticed this small burst at the seams, about 1cm long.... it must have opened towards the end of the freezing process, since there was no leakage that I could see. Is this safe to feed or no, you think? I mean, since there is this opening, the milk was not fully sealed/sterile I guess, but gosh, I'd hate to waste 6oz from only a month ago.... I've never had a bag open like this before so I don't know if it's an issue. LO is 6.5mo.