Hi yall! Question 3rd tri not 2nd

I'm 34+5 weeks prego and have GD ...my last app (which was two weeks ago on Wednesday) I weighed 184 and lost a pound so 183 ...I weighed myself today and Im down to 179....is that normal? I mean I have cut out alot of food sinse bring diagnosed at like 32 weeks. Like soda completely tortillas bread...nothing but water now....but my mom said that its not good that I'm losing weight....idk I see my Dr Wednesday ...so ill ask then but just curious ....anyone else going through this?