I went out to collect the eggs this evening and found one egg that has a soft membrane. It ... I don't know. What is going on? None of my girls have ever done this before. And it was warm like having been laid sometimes between 7 and 7:30. It is raining today so all the girls have probably had a weird day, their food was full of water because I forgot to put it in this morning (I knew it was going to rain, just had my head in other places). What should I do?