Federal Employee Insurance Questions!

Caitlin • Here we go with baby #3!
Okay, so my fiancé works for the government and we are researching health care options since I'll be on his insurance once we get married June 1st and roughly 7 months pregnant. Has anyone had experience with GEHA or Aetna for maternity care? I know BCBS covers a lot, but they are out of price range as is KPS. Figured I would ask as it looks as though GEHA and Aetna would cover 100% after deductible which is $3000