Picking dried blook out of nose after a septoplasty. Is this bad? What are the damages?

I am on day 6 and just went to get the splints out of my nose today. Now my nose feels so crusty inside. I can't stand it, so I have been picking the dried blood and crusts out of my nose (often attached to nasal hair - so it hurts). Is this bad to do? If so, why? What can I do instead? My doctor did not give me instructions in regards to touching my nose.