Is there any way I can get theft charge off my record or do something to not have it as a misdemeanor?

I'm 22, I was 18 when my boyfriend at the time stole items from HEB. They charged me with theft because I was with him. They put me on probation but at the time I had a child and couldn't make payments I had no job. So I gave them 200$ and I completed my probation unsuccessfully I believe. Since then I been hired at great companies but fired rite away because of the mistake I made 4 years ago. I have not been in trouble since and that was my first offence. Is there any way I can get it off my record or do something to not have it as a misdemeanor? I'm 22 haven't been in trouble since and I just want to get a job already. It sucks the law can't see I was with the wrong person and obviously learned from it.