March 17 Ultrasound ended in a check up at the hospital – 31 weeks

Baby Girl's HR was 153 and she was practice breathing. She weighs 3 pound 13 ounces.  Baby Boy's HR was 138. He weighs 3 pounds 4 ounces.

The babes are doing really well. Lots of movement, good growth and healthy HR's. 

My cervix was 1.5 cm long which is a significant decrease from 3 cm measurement two weeks ago. And my BP was measuring high. So with both of these factors the doctor at the ultrasound clinic recommended I go to the hospital for further examination and a steroid injection. 

A shortened cervix can indicate pre term labour. I was not exhibiting any other signs of pre term labour though. Also, a shortened cervix past 32 weeks is not a predictor of pre term labour (I am 31 weeks and 2 days)
So I went to the hospital. Fetal HR's and my BP was monitored continuously. The OB did a vaginal exam and confirmed my cervix has shortened and was approximately, in her opinion, 1 cm dilated.
The weight of my uterus has shortened the cervix. This is expected to happen. The weight of approximately 7 pounds of combined babes plus fluid is causing my cervix to shorten. I do not have any other pre term labour symptoms. 
They administered the beta steroid shot this afternoon and I will return tomorrow for the second shot. This will aid in the development of lungs and gastrointestinal track incase babes do come early. There is literally no risk to me or babes only benefit to babes by taking the steroids. 
My BP evened out at the hospital to 130/88. The Doctor was satisfied with this. She said my high BP is an atypical symptom at this point since I am not exhibiting any other signs of high BP. 
My urine does not have protein in it (no preclampsia) and my kidney and liver functions are all normal. 
I am glad I went to the hospital, it gave me a chance to meet some of the nurses and check out the area. The nurse said she was impressed with how well informed I was regarding birth and labour, she could tell I've been preparing for both.