Ate heated flaxseed oil the other day and became very sick, 3 days later still don't feel 100%, better but not 100%? anything i should do?

Wait it out: Just wait it out, and avoid flaxseed oil in the future. Hope this helps!

Take Vit. E and...: Flaxseed oil is very healthy to eat when raw but becomes oxidized when heated, which makes it somewhat toxic. These effects will lessen but taking fat-soluble antioxidants like Vitamin E can help (take natural E with mixed tocopherols). Eating healthy oils like flax and fish oil will help displace the toxic oils from your tissues. The homeopathic remedies Nux vomica and Sulphur may also help.