Okay...so my cat gave birth last night to 5 healthy kittens...all was wonderful. I was checking on her every couple of hours and the last time I checked on her she was breathing heavy as she did with labor last night. Is she having more kittens? There don't seem to be any contractions or straining on her part but the heavy breathing has been going on for a half hour now. At least a half hour since I noticed it. Any ideas or advice? Thank you!