A Bullet Left In The Body, Can It Cause Lead Poisoning Or Cancer?

There is no safe amount of lead, Lead finds its way into bone marrow when you drink dairy products. Lead antagonizes the body's ability to ward off and fight disease particularly because it gets into bone marrow. Even a tiny amount of lead can do allot of damage simply because that tiny amount keeps antagonizing the body.

I have 3 bullets lodge in my body ( head, hip, and arm ) and I was wondering if I should worry about lead poison or any other types of damages in my near future...

Yes

Are my chances higher because I have a 1970's era ak-47 round by my C-1 and skull/spine ? It wasnt put there willingly but it also hasn't calcified in 5 years that its been there .