The alignment was probably thrown off by the "jar" of the accident. Take it to an alignment shop and have them do at least a front end alignment. If its been a while since you've had it done, go ahead and get a 4 wheel alignment(recommended). Hopefully a simple alignment will fix your problem. If, however; the problem is deeper, a good alignment shop should be able to tell you what is wrong...ie..bent tie rod, bent control arm, etc., and then you can go from there. Good luck with that, and get it to the alignment shop asap, you don't want to churn your tires to peices!!!!!