Have you considered speaking to a school psychiatrist about your problems/ worries? Many universities have these resources available at low to no-cost for their students, and as someone who as experienced your situation (I was so burnt out, I just stopped going to classes, and ended up failing with all F's one semester... has since been rectified), I can only give my opinion on the matter.
One thing that helped me was going on some anti-anxiety medication. I started them the semester I failed out, and by the time I started back at university, I felt more able to deal with the "lack-luster" environment I felt I was being subjected to every day.
Just hang in there. Ask for help, if you feel like you really want it. I have faith that someone who has gotten through all but one semester of a BSN program is a smart guy! You'll do great if you take advantage of resources available to you.
Just remember the old mantra, "I can do anything for X amount of time!"