We live in a tick-heavy place. We find ticks *all* the time with in a couple of minutes of being onour skin, or with in a few hours of biting. We talked to our doctor and unless we show symptoms, get a rash, or it's been more than 12 hours, we are fine.
We routinely search for ticks on everyone, too. Getting lyme disease is a possibility, as well as many other infections, but it's very, very low unless you live in a huge lyme disease heavy place - and even then, you usually need 24+ hours of exposure.