Close-up of a mother changing diapers for her baby. [Getty Images] Picture this. As a new mother, you are changing your newborn baby girl’s diaper only to notice spots of blood.

Another common source of blood in breast milk, cracked nipples may happen if a baby doesn't attach to the nipple well. Occasionally, issues such as tongue-ties or thrush may be to blame.

Blood tests are safe for you and your baby. A technician will draw a small amount of blood from your arm. What to Know About Test Results. If any of your test results are abnormal, ...