PsychNurse is right, increased thoughts of suicide may occur. When I started my medication (Effexor), I was told that because of the high increase of whatever chemcial it was that I wasn't producing enough of, would be what led to increased suicidal thoughts. I was told it might take a while for my body to accustom itself to the medication. This may be your case.
On the other hand, if you have been taking this same medication for an extended period of time, maybe it's not right for you. You should be closely supervised when starting a new medication. Not only by your parents but your doctor especially.
Tell them what you are feeling. The doctor needs to know this so they can assess how your body is reacting to the medication.
On a side note: it has been scientifically proven that if a family member is using an anti depressant which works well for them, it could also work for you.
Chin up, girl. I'm with you!