Pregnancy depression

My husband and I have wanted a baby for as long as I can remember, hurray I'm finally pregnant! I'm ecstatic throughout the day, but extremely depressed at night- I cry and wonder if I'm even ready for this baby. I terrified mainly for selfish reasons- as I've stated in other posts, I do have epilepsy, which makes this pregnancy much more complex, although my doctors have faith that I will be just fine, I can't help but worry "what if" what if be pregnant caused me to have a seizure and something happened to the baby? Or what if when I'm feeding the baby in the night I have a seizure holding them- (I've been nearly 4 years seizure free) but I'm deathly afraid of it. I wish I didn't have this thing to worry about, I wish I could just enjoy pregnancy and be a normal woman, without this baggage. Just trying to vent I suppose. Does anybody else suffer from depression during the early weeks of pregnancy?