Can this be a sign of an UTI?

Bárbara • I'm 24, and I have a beautiful baby girl born on May 30th, 2017 ^^ I also have a dog named Oliver and I love him lots!

When I go to the bathroom I feel like not all of the pee comes out, it's like when I leave the bathroom I need to go back in to pee a little more, can this be a sign of an UTI or is this normal?

I have to do a urine test on monday and this makes me nervous! Should I be concerned? Thanks!