Hey so its been about 35 hours since my duck has made an external pip. It pretty much hasnt done much since then. I ask my hubby to help peel away the shell so it could breathe better but realized that their membrane still hasnt been periced. Should i be worried it has also started to look really dark around the pip hole today before we did this. I attached an image. Should i wait longer and see if it will hatch on its own.