My Six Year Old Female Jack Russell Terrier Seems To Be Lactating. She Had One Litter Of Pups Three Years Ago And We Are Thinking Of One More Litter Before Having Her Spayed. Is This "leaking" Something To Worry About?

The only thing we are doing differently is she is on a supplement to improve the quality of her fur. It is called "Shed Defense" by Nutri-Vet. 20 mg borage oil, 15 mg sunflower oil, 15mg safflower oil, 10 mg flax seed oil. It also has liver meal, dried whey, di-calcium phosphate, stearic acid, cellulose, dried milk, magnesium stearate, magnesium silicate, silicon dioxide. She has been getting one tab twice daily. Could this have messed up her hormones?