Can I be charged with theft if I never intentionally tried to deprive this company?

I am being charged with theft. I work as at an extremely busy grocery store. I had a lot of hard personal issues and got lazy scanning items. I simply wanted to get customers in and out and got into bad habits of ringing orders very very quickly without being careful. I never wanted to, or INTENTIONALLY stole these items from the company I am working for. I never took any items as my own, or gave them away willingly to anybody I had any relations with. It was honestly just working to quickly and getting into bad habits. I have never stolen a thing in my life. I have no previous record they took me away in cuffs and I was so confused and scared It was 3 days ago and i still can't stop crying, I feel so bad and guilty now for causing the loss, but I had no intention to deprive these goods from the company, does intention have anything to do with being charged with theft... or is this disregarded completely? I don't know how to defend myself. I'm so upset because I honestly did not mean, or have some crazy plan in my mind to steal. I never proffited, nor did anyone i knew profit from this. I don't know any way to prove that this was truely just attempting to quickly get customaers in and out of the line, not to take and give away items from this company. I was not thinking. I feel so weak and dumb for even letting personal issues interfere with my ability to focus at work. How can I defend myself? I do not feel I am deserving of being put into jail during the most important years of my life. I weigh a whole 90 pounds and would probably get the **** beat out of me each and every day. Who decides if jail time is deserving, and how is it determined?