Hi everyone. My rescued feral turned out to be pregnant. She had three kitten Tuesday night and one last night, almost 24 hours later. This morning, the day after her last kitten was born, she was panting a bit like when in labor. And now she started to stagger here and there when she walks. She had otherwise done amazingly without any complications and is taking wonderful care of her babies. The staggering is worrisome, though. Could she still have more babies inside, essentially having two periods of interrupted labor? Or could it be a retained placenta? We were not around for the fourth so I'm not 100% sure she expelled it. Or could it be hypocalcemia and what can I give her to help keep it at bay? My vet suggested giving her cheese when she was pregnant. She breathing normally, but clearly much more tired then even a day ago. Any thoughts would be appreciated! Thank you for taking the time to read this.