Take the trip to the vet, have someone drive you and keep an eye on the baby. We had a similar situation, it lost all color we rushed to the vet but the Foot itself was already dead. They prescribed her pain meds and other meds for infections and gave us an amputation day, wrapped it up, should have had them amputate it right there and then because due to them wanting to wait she ended up losing her whole leg instead of just a foot... she’s great now, still has phantom limb, but still active and lovey.