My son is getting his shots on Wednesday

and my husband and I both had an reaction to them when we were his age. One person from church told us about preservative free shots. Did anyone do preservative free shots? I am planning on calling his doctor on Monday.
Re: preservatives free shots
I am not sure what is available but I have heard of of that.
06/12 - BFP!!!!
Beta #1 15dpo - 256
Beta #2 18dpo - 1097
6wk U/S on 07/02 ~ TWINS!!!
EDD 02/21/13
09/10/12 Found out it's two Boys!!!! Sam and Jake
Jacob and Samuel born 1/29/13 at 36 weeks.