: has anyone experienced this? They only saw a sac. Prog. All heartbeats were always about the same and babies CRL were about the same give or take a couple of days. For a healthy gestation, it is suggested that the mean sac diameter should be at least 5 mm greater than the crown rump length.. had a transvaginal ultrasound at 5 weeks and 2 days. All this was done with a very sensitive transvaginal scanner. For example, a gestational sac measuring 11 mm would be approximately 5 weeks and 4 days gestational age. So most of you know I had my scan yesterday. We saw a gestational sac but no yolk sac. They did an ultrasound and there was a gestational sac, but they could not see a baby or heartbeat in the sac. My head is all over the place. should i be concerned?" ultrasound today, 13 mm no yolk sac or fetal pole. My doctor gave A a 90% chance of making it, B about 75%, and C only 50% based on sac size. They calculated me to be 5 weeks and 5 days at the second scan, so that means I was 5 weeks and 2 days when they only saw the gestational sac. My HCG and Progesterone have been checked and they have a doubling time of 1.55 days, which is good. Measurement. Thanks a lot. Any advice? I had ultrasound done today. It was measuring at 5 weeks and 4 days, but by my dates I should be 8 weeks pregnant. I am 18 weeks now with two boys and one little girl. :( - BabyCenter Canada They expect it to grow a mm a day so you should see a huge difference the next time. Ultrasound at 5 weeks 2 days no yolk sac? This relies on the growth of the normal gestational sac of 1 mm per day after the 4th week of gestation. Three days later they did a follow up scan and saw the gestational sac had grown and now had a yolk sac inside. Turns out, each egg implanted 2 days after each other. Interpretation. Have to go back in 2 weeks to see if there's anything there. Normal MSD (in mm) + 30 = days of pregnancy. There's a gestational sac of 5 weeks measuring 7.6mm. When I went back 2 weeks later it had more than doubled in size. Mines was pretty heavy bright red and cramping. They only saw a gestational sac- no yolk sac or fetal pole. MSD = (length + height + width)/3. iui 5/2/14. ... Hi, at 5 weeks 4 days my gestational sac was 9mm so very tiny. I do have nausea, so I would think things are progressing. (4 weeks plus 11 days = 5 weeks and 4 days). There was a gestational sac, but nothing inside. The MSD increases by about 1 mm per day, however, there is considerable variation in the rate of MSD growth, with overlap between viable … Where to go next: Get helpful tips for each week of your pregnancy and your baby’s first years with our pregnancy and baby calendar; Use our child height and weight chart calculator to see how your child’s size compares with average; Find out how your child will grow from birth to age 8; Video: Watch how your body changes and makes room for your growing baby during pregnancy My hCG levels were up from 1,100 the Friday before. hcg 561 progesterone 119 5/19/14, hcg 1255 5/21/14. was 32.5 and HCG was 8300 on the day of the ultrasound. Is that a problem? No yolk or fetal pole seen. I am worried and am hoping my baby is okay. "what size should gestational sac be at 5 weeks 6 days? Is it too early to see one? Just wondering if the gs measurements seem normal for 5 weeks? They said I was around 7 weeks and 5 days. Like you I also had bleeding. 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