Your opinion about traveling

For the Thanksgiving weekend my baby will be 7wks old. My parents are really pushing me to drive from Dallas to Chicago to visit family for the holiday with them. I tell them that I don't feel comfortable going because of the drive and also just in general, I feel she is too small.  I don't feel comfortable on the idea of being out of my house where I have everything available. Also even when i go to the store with my baby I just want to be home or hope she is asleep the whole time. I breastfeed & supplement. (Also when I pump its for future use when I return to work/goes to the freezer). They keep bringing up the topic and I have grown tired of repeating my reasons.