5 weeks anyone???

Had five weeks ultrasound today at RE office. I went in early because I couldn't wait to see it! Saw gestational sac, dr said since I just turned five weeks it's too early to see yolk sac. He was very happy said everything looks good. But I read online an oval sac can be bad????? But I've seen a lot of women on here have more oval than circle sacs? Can anyone show me theirs @ 5 weeks or give insight