Could Accidental Intake Of Plastic Along With Food Be A Matter Of Concern?

Ok so I just ate a cup of Velvetta Macaroni and Cheese microwaveable cup and forgot to take the lid all the way off Am I going to get plastic poison because of it. It didn t get in the food. But still, it was in the microwave and I ate the food. Now I have a plastic taste in my mouth. Should I be concerned?