Weight gain concern...

My OB expressed concern at my 28 week appt yesterday that i had gained 8lbs since my last visit (my largest jump this whole pregnancy). My eating habits haven’t changed this whole time I’m a healthy eater, and if anything my daily activity has increased since beginning my new nursing job. I feel like since my last appointment i have deff “popped” she said it could be because baby had a growth spurt but when they weigh me at my next appt in 3 weeks we will better be able to see.

Did this happen to anyone else?? It’s making me second guess everything I’m eating even though it’s mostly healthy! (Following that 80/20 rule)