Weight Gain

So I'll be 32 weeks tomorrow, and I haven't gained any weight since 28 weeks, literally not even a pound, I lost 7 in the beginning, then put on maybe 14-15 pounds, and i just stopped, my midwife pointed it out two weeks ago that I hadn't gained, and kinda hinted I needed to keep gaining, I weighed myself this morning and nothing, anyone else just stop gaining out of the blue??