Question about tetanus?!?

I had my tetanus booster when I was 11, and now I'm 16. I got cut with my friends rusty razor blade (didn't realize it had rust on it till later). Lately I've been feeling shaky, I've had headaches, neck pains, and chest muscle spasms. I've also been really tired and my blood pressures been high, even though I'm really physically active, and I can't sleep well and when I do sleep have night sweats which has never happened to me before. I know they recommend you get tetanus shot every ten years but, in some people I hear it wears off as early as 3 years after the booster. Should I worry/go to doc?