Do i have rights to refile using being let go before my notice was carried out?

I live in Ohio working for a personal injury law firm. After several years of doing the work for my boss along with my own and the jobs of those they did not replace ( admin went from 7 to 3) I decided to leave my employment. I was diagnosed with tension headaches by my neurologist. I told my boss several times that I was struggling that i wanted to be moved to operators position and i was denied by my boss. I had been "harassed" by another manager and doing all the extra work I just couldn't do it. The day before i put my notice in, laying on my bosses desk was a list of things she claims i did wrong which followed the manager i complained about. I put my notice in on 10/06 my last day was suppose to be 10/20, i had the 16th off, that day around 4:30 my boss called me and told me that i did not need to come back. That they would pay the rest of my two weeks and give me a two week severance. I filed for unemployment and was denied. later when another employee put in her notice she told them she under that she might not be allowed to work her two weeks, the manager i had issues with told her that me and another employee who quite due to harassment (won unemployment) were different circumstances