I have a five month old New Hampshire Red who is currently in a nesting box and panting and seems to want to lay. My two other pullets started to recently lay and I got two good eggs from them today. However, I also got a soft shelled egg earlier that was broken. I don't know who laid that one. Could it have been the New Hampshire? If so, why is she still in the nesting box? She's been in there for about two hours now and I felt her abdomen and it felt normal. I worried about her but I don't know what could be wrong. I do not have access to a vet.