I am beginning to think that my wee chihuahua is preggers...but I didn't want that to happen because she is so little! I could almost stuff her into a pint glass, she's the runt of the litter. The only possible father is my boss' dog, who is about 9 pounds to little Ruby's 3ish! Do you think this could hurt her, or will those possible puppies stay tiny in her little tummy??