Trying not to ruin Christmas, but...

Riz

My bf insists we take a 3 hour drive to see his dad tomorrow. Now usually I'd say ok with no hesitation and it is Christmas <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a>, but I'm 23 weeks pregnant. I'm sick as hell right now and i don't want to be stuck in the car that long. Especially because i get really bad anxiety every time we take that drive. Plus, my bf got a flat tire overnight. He did use fix a flat stuff to fix it, but now I'm worried that we'll hit a really bad bump or hole and get into an accident. His dad is disappointed, but they could easily take the same 3 hour drive to come see us.

Do you think I'm being unfair by not wanting to go? Should I just suck it up because of the holiday?