Is this a chemical pregnancy

[HeadFairy]

I've posted this in pregnancy too as I have no idea what's going on...

According to my dates I'm 6 weeks pg today, however I've had some spotting so I've just been for an early scan and the sonographer couldn't see anything. Not a sac, nothing. She checked my tubes and they all looked clear too which is good news, but I'm a bit concerned about the fact that by now something should be visible. I've had some bloods done, got the next set in 48 hours, won't find out for sure til monday what's going on (hopefully)... I'm thinking it's a chemical pregnancy, but I wouldn't have thought it would hang around this long.

I have a normal 28 day cycle, LMP 11th Dec, I think I ovd on Xmas day, and only had sex on Christmas day cos I was feeling so poorly with a cold. I definitely ov'd cos the sonographer could see I'd ov'd from the right ovary, and the uterus lining was all there, I know I haven't bled enough to have had a miscarriage. So far it's all been old blood, bar one tiny bit of watery new blood. What on earth is going on? Anyone had a similar experience?

[PuzzleRocks]

Bumping for you.