Hi Girly, congrats with your baby!
At such a young age, I wouldn't worry about stimulation. It is enough for your LO just to be alive!! Spending time together like you say, talking to her is great. This is time to bond with your baby not to worry about is she getting enough stimulation. At this age they get overstimulated very easily, I would try and limit stimulation untill a bit older.
The Babysense book gives great guidelines as to how much stimulation they should be getting at what age and what type of stimulation.
Enjoy this special time, cuddling, kissing, talking and then some more cuddling or maybe a quick massage for baby.