Can I sue my former employer for wrongful termination, slander and emotional distress?

Female Michigan Worker - I would walk in the door everyday wondering if I would get yelled at. So bad he was in my face yelling until his face was blue and spit flying out onto my face. Over basically nothing. He does it to everyone there. I started getting stomach pains and went to the doctors, who ordered me to take 2 days off. When I returned and gave the doc note, I was fired on the spot without a straight reason. A week later he said to my boyfriend (that I had been dating well before he started work there) who also worked there "what do you want with that slut when she’s been around the whole shop floor "Which was a very untrue statement. I live in a very small town where everyone knows everyone. I had to deal with embarrassment from the rumors he spread to a few workers who spread them around town. How can this guy get away with the disrespect and basic torture¿ How is it that he’s capable of even running this business. When he has his workers who aren’t even certified to run electrical and gas lines without it getting inspected. Slave driving the workers for basically peanuts. Something has to be done. Please tell me I can do something about him.