My microwave-safe plastic container was deformed due to excessive heat, and i accidentally ate from it. it may have contaminated my food. i'm asymptomatic as of now. do i need to worry about the long-term effects such as cancer, bioaccumulation, etc?

One episode of plastic contamination of food is not likely to have any long term effects on your health. You can reduce your risk of cancer by adopting healthy habits: Eat a mostly vegetarian diet, avoid alcohol, tobacco and street drugs, avoid excessive exposure to sun, get HPV vaccine, exercise 30 minutes each day, drink enough water so your urine is mostly colorless.