What's done is done...
Before I continue any further: if you are feeling suicidal or otherwise unsafe, you need to get psychiatric help immediately. Call your psychiatrist for an appointment; if you don't have one or can't get seen ASAP, call 911 or go to the nearest ER.
First, just because someone posted online that Walmart won't do this or that doesn't mean that Walmart is contractually bound not to do this and that. If Walmart wants to prosecute, even if it's for $4, they have the right to do that at any time. The fact is that you have a court date, so charges are being pressed. Accept that.
Second, get a lawyer that has experience in dealing with BONs and knows the ins and outs. And LISTEN to their advice. You can find some here: TAANA Executive Office - Home
. No, a lawyer won't be able to undo your bad decisions and magically make it all your troubles go away...but a lawyer could help mitigate the damage.
Third, keep studying for the NCLEX. As long as you have a scheduled test date, presume that you are taking the test on that date until the BON says otherwise.
Fourth, stay positive. A lot of nurses with criminal records go on to get licensed and have nursing careers. The odds are decent that you will be one of them. You may have some limitations as to where you'll be hired--depends on how employers feel about theft convictions.
Fifth, I'd postpone any big life decisions: marriage, procreation, etc., until you get this sorted out. The last thing you need is to be dealing with this and then find out you're pregnant, or trying to plan a wedding with money that you should really be putting towards your lawyer's fees.
And last...stop shoplifting. Courts--and BONs--don't look favorably upon repeat offenders. A repeat performance is more likely to stop your nursing career than an one-time incident.
Best of luck.