Hi, congratulations!!,.With contacts your vision will be much better, wider and clearer, you'll see.
For blood shot don't use Visine red eyes, you can check here there is many complains about it.
Maybe you got your eyes irritated because you are using them too much hours, you have to increase the hours with the days, first days, 2 hours, after 4 and so on.
Second, you have to got your eyes moisturized with some tears like Bausch & Lomb
(for me the best) or Alcon. Always use good products for your contacts it;s a huge difference. And all those all in one products like Renu aren't the best really. Try to use Aosept for conserving at night and Polycleans II (Alcon) for cleaning,it's the best in the market. Don't forget to remove proteins with unizame every week. I tell you all this, because if you skip some of this things, you probaby will have irritation and red shot, and normally a contacts user must have the eyes ok.
If you feel irritated now i give you a contact users advice:
Use a cup (those small ones that comes with the eye wash and put saline solution and wash your eyes with this.It's super refreshing and you can do many times a day if you need.
Last i recommend the use of a hydrating gel as Celluvisc, for the night , when you go to sleep, that's more hydrating then normal tears.
And about the nails, sorry to say you have to cut at last the finger that you use for put and take out the contacts, it's very common breaking the contact with the nail.
Good luck!!!!