Over weight

I went to my doctor appointment n the obgyn say tat I'm a little bit over weight... I'm at 27 week n i have gain 32 lb so far for my pregnancy... am I the only one that have gain tis much during pregnancy... I did my glucose 1 hrs test n didn't pass... so have an appointment for 3 hrs glucose tis week... but my frist pregnancy I gain a total of 40lb up to only 35 week cause I have my son early...