Sugars have been perfect but most recent ultrasound still showing large baby - so discouraged

Diagnosed at 24 weeks, now almost 33.

Have been absolutely miserable eating super carefully always walking after bigger meals… all of my readings for the last six weeks have been in range, although they are trending upwards not surprisingly as pregnancy progresses. Not over target yet though.

Ultrasound yesterday has baby’s abdominal circumference 90th percentile up from 74 four weeks ago.

I just feel so worthless. I know if I wasn’t dieting it’d be even worse but just feels like I’m so unhappy and shackled to this diet and still can’t seem to be doing enough to get her size in check 😢

I wanted to have a cheat day at my baby shower this weekend and enjoy a slice of cake but now I feel it’s ruined as I’ll beat myself up worrying about it

What can I even do? I’m dieting I’m exercising - insulin unnecessary because my sugars are fine… I just feel powerless and frustrated