I am 11 weeks 2 days and I’ve had problems with my first pregnancy, I went into preterm labor due to my cervix shortening.. with my second pregnancy they had me going for ultrasounds often to keep an eye on it and there was never any problem and now with my 3rd pregnancy I’m just curious if there is any problems with it this time around.. would it be okay or understandable for me to ask for a 12 week ultrasound? They already said my next ultrasound would be at 20weeks. My only other ultrasound was at 6weeks...