I also recommend gowing away for a weekend (exp: Las Vegas) where you can have a great time alone, have fun and intimate quite time to reconnect. Good Luck.
I think that just being a mom (caretaker, housekeeper, cook, nurse, choffer, teacher, advisor, woman, lover) and the many roles and responsibilities of just being a mom at times leaves little time and just plain ol tired for the romance department and I also feel that the Ativa, Celexa and any other combinations of medication might have side effects. I recommend that you contact your gyne with your concerns. You might be having side effects that your doctor can discuss with you and the changes within your body after childbirth. Also, try to find personal, intimate quite time for just the two of you. See if a trusted family member can watch the kids for an evening, giving you time to just go out to dinner, maybe a movie or a long walk and reconnect. Good Luck, Judy