Do I have a case if my employer had me walked out as if I was terminated although they say I voluntarily resigned without allowing me to submit papers

My supervisor had been continuously harassing me by nitpicking with me over minor things. I became so stressed in the workplace that my blood pressure became through the roof and my doctor had to take me off work. I eventually had to reach out to one of the Senior Directors about the issues that I was having in order to be removed from one of the teams that I was on to try to elevate some stress. After that it was if there was a target on my back. My manager stopped talking to me and my supervisor would constantly nitpick. On 9/1 my supervisor came to me in regards to attendance and stated that I only had one point because I came in late after having my wisdom teeth removed. They wouldn't allow me to take off the full day. She also stated I wasn't adhering to my schedule despite the fact that the project I was working caused it. I was told I was being placed on a finally and felt as though I was being pushed. I informed her that I would submit a two weeks notice and next thing I know..