How many weeks am i if gestational sac measured 3.5mm? had a d&c 7 weeks ago and found out im pregnant again without a period

About 4 1/2 weeks: A gestational sac of 3.5 mm roughly corresponds to an estimated gestational age of 32 days.

6 at most: But more importantly is to be involved with your OB early to insure a healthy pregnancy. The lack of early OB care , is the leading cause of our country's perinatal mortality numbers.

Unclear: Gestational age based on a gestational sac measurement is not too reliable. Once a fetal pole is seen on ultrasound, you will have a better idea. That being said, typically a gestational sac can be seen sometime between 4-5 weeks. Best of luck to you with your pregnancy!

4 weeks: It would be approximately 4 weeks old, maybe 4 weeks & 4 days but that measurement i'm sure is not exact because the ultasound is not exact, so neither is what I am telling you about yourself . It is just answering how old is a gestational sac that size!

About 4 weeks: That size is about 4 weeks gestational age, or 2 weeks since fertilization.

Five weeks: The gestational sac size is consistent with a five weeks plus maybe one or two day pregnancy.This is approximately three plus weeks from conception.