GRE question: I took my GRE today and later realized that during the ytical writing section, I did not ?

indent my paragraphs. The tab key is disabled during the exam and I did not think to use the space bar because I was stressed and not thinking. I think it was pretty clear where I started paragraphs but I can't say for sure. Does anyone know if this will significantly affect my score? I'm sure I will be penalized in some way, but I hope not significantly.