F1 student forgot to file form 8843
Hi,
I've been a F1 student since the fall of 2009, and I have had income since then. As I've only worked sporadically and have earned less than $3750 during 2009 and 2010, I didn't file for taxes (1040NR/EZ); but I also forgot to file the 8843 form for those two years. I only just came to realize this, are there any penalties for my mistake? Should I file for the forms for those two years now? Also, just to make sure, should I have filed 1040NR/EZ as well? Thank you!