This unborn baby in Martha knew the moment Mary spoke that the Lord was the baby she carried. Marthas baby experienced Joy in that moment. The scripture also says that Elizabeth was filled with the Holy Spirit.
There are times when we get the Holy Spirit flooding us as it testifies in agreement with something else from God. A friend comes to you and says that they believe they have hear from God about something and the Holy Spirit fills you and you can witness in agreement with that person that it is from the Lord.
Continue to seek the Lord for his joy.
The joy you are looking for is only found in the Lord.
Luke 1:39 (NIV)
At that time Mary got ready and hurried to a town in the hill country of Judea, where she entered Zechariah's home and greeted Elizabeth.When Elizabeth heard Mary's greeting, the baby leaped in her womb, and Elizabeth was filled with the Holy Spirit. In a loud voice she exclaimed: "Blessed are you among women, and blessed is the child you will bear!