At this gestational age, having a “low-lying placenta covering the os” means that your placenta is completely covering the opening of the cervix. The fact that your cervix is 4 cm. long (as opposed to dilated) and closed is exactly how it should be.
Very often, as the uterus enlarges, the placenta moves away from the opening of the cervix, however, at this early stage you still can’t be certain it will. This means that you may have a complete or partial placenta previa.
This potentially puts you and risk for bleeding problems during your pregnancy. I would not recommend traveling unless you have had another ultrasound which shows that the placenta is now completely away from the os (opening of the cervix). Please talk more with your doctor about this.
I wish you the best and please let me know how things move along.
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Ask Tori RN®, by registered nurse and resident author of The Joy of Pregnancy, is a helpful and reassuring resource for parents-to-be.
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