My baby has had loose stools for almost a week and a half now. Is that normal?  

Loose stools. Depends on the age and the babie's diet, and sometimes the mother's diet. In many circumstances loose stools can be normal. Has there been a change in diet or a change in formula? Is the baby growing normally or not. If the problem persists without a good explaination of the cause, then discuss this with the babi's doctor to determine whether or not an examination is necessary.
May not be. One common cause is overfeeding in formula-fed infants. However, breastfed infants often have loose bms several times a day. In older children over-consumption of fruits and fruit juices and chewing sugar-free gum can also cause diarrhea.