Have been watching her for the past little while. Have noticed her anus has been opening bigger and bigger with no fecal matter. I know it has been stated that she will open close to birth but she is still swimming like normal and pecking at plants. Just because shes open can this happen day before or should i get ready for babies? Also she almost has been doing a flinch. Looks like she pulls her tail sideways and reaches her head same way as if she trying to hit her head with her fin and then straightens out. Happens in like a split second. Any idea why?