Should I try to sue for Roach in my burger at sonic?

I went to sonic with my sister to get some brunch. I ordered a burger amongst other things and ate the appetizers before biting into the burger. I took the first bite of my burger and started to chew when I saw something that didn’t look right. It took me a few moments to realize that this was a roach in the middle of my burger. I was sitting in my car at the time so in my panic it took me a while to manage to get the door open and my seatbelt off so that I could spit it out. I tried to spit it on the ground but the roaches leg was stuck on the roof of my mouth so I had to physically pull it out of my mouth. I threw the rest of the sandwich down on the ground and proceeded to gag and heave while my sister went inside to confront the store. The roach tasted like chemicals. The Manager was defensive and rude, accusing us of putting the roach in the food and took the sandwich with the rest of the roach and threw it in the trash. He said “we don’t have roaches” and dismissed us.