Call your doc and see if this is something they are comfortable dealing with, some docs might prefer to send you to a therapist of psychiatrist who's is more familiar with depression. When you have an appointment (with whoever) bring in a list of your symptoms. Be very specific, even if you don't think its related to depression.
My depression symptoms included insomnia, lack of interest in normal activities, poor concentration, mood swings, and crying spells. Other symptoms can include sleeping too much, appetite changes, and lack of interest in sex just to name a few.
There are hundres of antidepressants out there that can help. Just remember that it might take a few tried to find one that works for you. I am on my 5th antidepressant but I finally found something that helps me sleep, improves my mood and helps my chronic pain (nortryptiline).
Depression is very common, so don't feel like a failure. CFers have a lot to deal with and you're a mom too! Its worth giving the meds a shot, once you find one that works its so good to feel like yourself again!