Early pregnancy motion sickness?

Ke

We started TTC on the 9th. Its estimated that I ovulated around the 12th. Today, the 17th, I have felt nauseous every time I've been in a moving car. I have never been motion sick in my life. Could this be "morning sickness"? Did anyone else experience purely motion sickness at the start of a pregnancy? and if so, how early on did you feel this way?