Hi. I've made myself completely paranoid. Baby due in a few days and we are planning to use a second-hand moses basket with second-hand mattress. It's a foam one that is completely coated in plastic, there are no tears apart from a tiny pin size hole. I've washed it with Milton but now have doubts about whether it is safe to use??? Going mad. Should I just buy a new...it's only a tenner!!! Advice welcome!!