I am so sorry for this series of events you are struggling with and my prayers are with you. Please find some support in the form of a good friend, therapist, minister or your doc. If you tend to be depressed this series of events will sure not help and you need to focus on positives now in all forms.
Great advice from all here...many of us here have been unemployed for some time due to injury and illness, etc...some of us are just getting back into nursing due to the same so we can relate. Just keep plugging. You might be pleasantly surprised if you contact some coworkers who liked you...they may write you some awesome referrals. Contact every old nurse or medical friend and ask them for help. Also, have you tried agencies? Doc offices? Private duty ads in the paper?
As for whether you want to give up on nursing, well, only you can answer that...nothing wrong with finding something else while you figure that out so if you see something in the paper that piques your interest, go for it. Once you're being productive again, you will begin to feel better and more positive.
If you are a religious person, I would remind you to pray for guidance and comfort in your life. It has helped me tremendously...although I had to learn things were on God's timeline, not mine.
Good thoughts and prayers coming your way. Vent here anytime. And let us know how things are going.