I got bit by my cousins dog that has been vaccinated. Should I still worry?

I got bit 2 days ago by my cousin dog, It was the first time I met her and I did the huge mistake by petting her while she was smelling me (which you are NOT to do when they never met you and your walking into their territory). I just really love dogs and couldn't help myself. My cousins say she is vaccinated and got all her shots, but should I still be worry? It was not a bad bite, I have a little scar on the lower palm of my hand, it looks like a circle but it's dry. Help please!! BTW, did I mention after the bite she was stuck to me like glue, she even slept with me and followed me everywhere I walked to... It was like she felt bad cause she realized I'm a dog lover lol