Super nervous for my ultrasound today! Anyone had a late ultrasound due to suspected poor fetal growth?

I’m 32weeks yesterday. Up until now, my weight gain has been slow/non existent which was never a problem with my other 2 pregnancies. I didn’t gain any weight from 30-32weeks. Which my dr became concerned about around 22/26weeks. 22weeks I hadn’t gained anyone but 4lbs. 26weeks I gained 3 but wasn’t much so dr was like well wait and see before sending me for another ultrasound. 30weeks I gained 4lbs and so she was like okay. Well 32week appointment Monday and I haven’t gained any at all. Also my fundal height which has been fantastic has not changed since 30weeks. So she decided another ultrasound to check on things. Has anyone had this happen? Something similar? How did things turn out?

Because of my severe anemia since the start of my pregnancy and stuff, I’m so worried about IUGR.