My Pregnant Dog Is Almost Ready For Labor But For The Last Couple Of Days She Is Panting Very Hard But Only At Night What Is Going On?

You are an inexperienced breeder. I recommend you educate yourself. The dogs temp will drop a couple of degrees when she is within 24 hrs of labor. The normal temp is 100-102. Make sure she expels all the pups, or she will be at risk of toxemia. Pups should be wormed starting at 2 wks old, and every 2 wks until 4 mo. Old. They get their 1st shot at 7-8 wks, a 7 in 1 , or 8 in 1 combo.
DO NOT KEEP BREEDING YOUR DOG, IT IS IRRESPONSIBLE, YOU DO NOT KNOW WHAT YOU ARE DOING.