First cervical ultrasound check at 19 weeks too late?
Hi - I’m 13 weeks pregnant with didi twins and my anatomy scan is scheduled for 19 weeks. I keep seeing online that some OBs start cervical checks at 16 weeks and every two weeks thereafter. Mine is planning on just doing it at 19 weeks and 4 weeks after.
Should I push for more frequent checks? I don’t want the window for a cerclage to close if we check too late, but also don’t know if I’m being unreasonable.
Thanks!