Anti-depressants can also treat anxiety and OCD.
With any medication, its about finding a fine balance and sometimes when this balance isn't found, you can suffer the side effects which, in the case of anti-depressants, can sometimes be feeling suicidal.
They ARE worth trying because they CAN help. However, they take 4-8 weeks to kick in, and often at the start can make you feel worse rather than better. There is also multiple types of Anti-depressants, some will work for you, some will not. Its about finding that fine balance of medication type, and dosage.
I hope this snippet of information helps. Remember, anything that might help is worth trying.