I don't know much about the pre-packaged stuff, but I would assume that it is cut then sealed straight away to maintain freshness. Given you are 29 weeks, bubs should be developed (someone correct me if I am wrong). Not much you can do about it now, but keep any eye on how you feel - I would drink lots of water b/c processed meat has alot of salt. If you start to feel unwell, go to the Dr or hospital straight away