100 Back LCM at Winter Nationals in the Morning

I swim the 100 back in the morning.  My knee is definitely not as pain-free as I would have hoped, it's been 7 days since I injured it.  Unfortunately I was only able to give it one day to heal, last Sunday.  I really think I just need to take a few days entirely off swimming for it to completely heal.  I'm still limping around.  I probably shouldn't race in the morning but since I drove all the way down here, I will give it a shot.  I would really like to be a 58.xx but I think that's asking a lot out of my body at this point.  I will take that first 50 out hard and try to hold on!