Nursing Visit today

An
So today I had my nursing visit with my
Midwife. We went over lab results from two weeks ago. She said everything looks great. I'm 8 weeks today. But the number on my glucose is too close to the diabetes mark.
To be honest, I'm really freaking out. I weigh 233 now, 229 before finding out I was pregnant. And 232 when I had my first appt at 6 weeks.  I'm trying to eat healthier but I can't help to feel overwhelmed. Advice?