I had 3. my first at 12 weekd to see how far along I was. a second one at 18 weeks for the anatomy scan. then my last at 21 weeks since the baby was turned at my 18 week one and they couldn't see everything.

I had two, first one my placenta was low so they did a second and it moved up

I had one at 7 weeks, 12, 19, 25 (the 25 was to see if my placenta had moved up, which it did!)

I got one at 7 weeks to see if heartbeat was there since I had 3 previous miscarriages. Then one at 20 weeks which is the standard one if everything is going smooth.

I had three, one to see how far along I was, one at 20 weeks then another to check babies growth cause I didn't put on much weigh

One if everything is normal

with baby #1 I got one at 7 weeks and 1 at 20 weeks. this one I got one at 20 weeks. I'll have another at 30 weeks but only because there were concerns