Sugar Test at 17 weeks

JEN • Married 12/31/11 TTC since 1/1/12. We suffered a mc 12/23/14 :( started 2015 we did injections, still BFN, did 1 IUI BFN finally moved to IVF (long lupron protcol) in Sept. BFP! EDD 07/17/16
I have my sugar test tomorrow. I know a lot of OBs do it after 20 weeks, is anyone else having theirs done early?