How to Prevent Nipple Confusion

I am a first time mom and my daughter is 2 weeks old. I have been breastfeeding only ever since she was born and its been great from the start. We both caught on right off the bat and have had no issues.

I need to be able to pump and introduce a bottle for when I go back to work in a week, but I don't want to lose the bonding of breastfeeding! Any recommendations on bottles etc?

By the way, don't know if this matters, but I breastfed with just my nipple for about 4 days but then got a nipple shield. She had no problem using the shield and actually still breastfeeds without it if I'm too lazy to go get it. Will she be okay bouncing between a bottle and nipple shield?