What do I do now that my soon to be ex wife is accusing me of stealing her meds.

Hire counsel. That is step one whenever police are calling you. Listen to counsel's advice. That is step two.

What should I do if I was in a car accident a few months ago and I being sued?

Turn it over to your insurance company asap if you have not already done so.

It legal to randomly drug test somebody during that drug test the person is being watched by two other people

Yes, it is normal for testing to be observed. If you refused, that was a bad choice on your part.

How can someone be charged with possession and taken into custody without being found in possession of ANYTHING?

Hire counsel for your boyfriend is the best way to assist him.

Can they charge me with first degree robbery when I didn't have a weapon on me

Sounds like you were charged as acting in concert with your buddy. Hire counsel if you haven't already done so.

Then my question is if someone isn't held responsible for the outrageous and despicable acts against one person....

There are several avenues for low income people to seek assistance of counsel.

By the way I am 28 years old now

No clue what this relates to, but, uh, congrats.

If neither of us have a court ordered custody agreement can I go get them if he was in jail?

Are you married and living apart? Never married? Why have children been living with him? These things matter.

Unlikely anyone blew it this time. Were you discovered uncovered, arrest could have taken place. There is a reason the phrase get a room exists.

What happens if you fail your first drug test?

Unless he shows for court looking like he may be under the influence, it is unlikely he would be tested on his court date.