Pot Bellied Bubba

So I had a growth scan at 29 weeks (2 weeks ago) and we were told that our baby has a bigger tummy but it’s the bigger side of normal. The sonography said that it is most likely that bub has put weight on there and it will even out as it’s too low on the measurement graph to be my blood sugar, whereas my consultant said it could be because of a high blood sugar. I’m quite confused and now I’m a little worried and feel guilty!! I’m not sure what to do and if I can do anything to help my poor teeny bean!