I would be inclined to say that what you have seen is the gestational sac that contains the embryo. You'd most likely not be able to see the embryo because at 6 weeks it is very tiny.

A blood clot. Which is basically a hunk of lining of your uterus. The same lining of your uterus that you shed every month during your period.

The embryo is far too small for you to see now and know what you were seeing.

I saw a six week embryo in the Bodies exhibition. I don't know how gestaional sac looks like but the embryo sure did looked white-yellowish and you could tell it's definetly embryo.

yep i believe a 6 week embryo is about the size of a bean...or a penut thats not in the shell

isn't it the size of a grain of rice?

i seen a few quite large whitish yellow lumps in a giant clot i passed i thought it looked like a brain, i was heart broken thinking it was the baby i buried it in the garden cos i didnt know what else to do with it, it was horrible how it came out i kinda caught it in my hand because i coughed and felt it slide out so as i was in the middle of changing my underwear i had to put my hand there! how long did you bleed for cos iv stopped an its only been 6 days ?

How pregnant were you? Have you been to the doctor?