I couldnt have a tooth pulled because of insurance reasons a year has passed and for the past 2 weeks everything i eat is either sour or it taksed like medicine in my mouth...right were the tooth is.yesterday my right foot felt like pins were constantly s

You : You need to be evaluated and treated by a dentist to prevent an infection that could compromise the condition of other teeth, gum and bone. If left untreated an infection can spread to other parts of your body, either directly or through the blood stream. It is better to have routine dental care and deal with minor problems than having to deal with a major health issue later that will be more expensive. See your dentist as soon as possible.

Yes. : Yes. The 'poison' you are referring to is the chronic infection from the tooth that remained in far too long. I dont know the source of your other medical issues, but you can start down the road to recovery by removing the remaining tooth fragment and treating the infection.

Unfortunately : Unfortunately any long term oral infection, doesn't stay confined in your mouth, it will travel throughout your system affecting your brain, heart, lungs, liver, kidneys so on and forth. Please, set your priorities in your budget, try to find a local dental school clinic to take care of your problem and don't allow insurances to govern your health, we don't reside in a socialized medicine country. Good luck.