Yes - you should go ahead and worry...
About what specifically? I don't know...but with raising two little ones there'll be plenty to worry about.
Now - what are you going to change by worrying about the allignment of the primary teeth before you make it to that dental appointment?? Are you looking for a way to quickly get them straightened out before the appointment?
What you're doing is the RIGHT STUFF, mom... You're taking your guy to see the dentist! Regular dental visits are important for little ones. I'm glad to hear you see the value of the primary teeth and the role they play with the "adult" teeth.
But stop "worrying" and borrowing trouble. It solves nothing, just raises your blood pressure! And like I said...there's plenty more to worry about that you can actually DO something about :0) Talk to your dental professional and see what she/he says. :0)
S., dental hygienist and homeschooling mom to 3 manifestations of my mother's curse to have "one just like me"