Hit pothole and now tracking is way off

[Zen_Speedmaster]

Hi all, I was towing a trailer and I hit a pothole. My tracking is now way off and the van is pulling to the left fairly hard. 
I took off the left front wheel and had a good look around but nothing is obviously bent or broken. There aren't any rattles and knocks either. 

Could the tracking have been affected without bending or breaking anything? Should I just get the tracking adjusted at a garage and call it fixed?

[OMG]

Think I would get the tracking done tell them what happened so they can have a good look for damage while they are doing it.