Flu shot - not going to get it?

I haven't had the flu in 5 years, I haven't had the flu shot in 5 years. I had been getting the flu shot up until then and I was sick all the time. Now, I'm healthy and haven't been ill in any way in about 3 years. I don't want the flu shot because of all of the additives. I don't want to subject my baby to formaldehyde and Mercury- I eat very clean to avoid toxins anyway.  It makes me nervous.  Is anyone else thinking about avoiding it while pregnant?