Um yeah, I'd say [DS]. [;)] Congrats!!
Definitely [DD]! Congrats!!
We DTD 3 to 4 days before O. We weren't TTC. I only had a couple of cycles since having our last baby. Normally I am very regular, but I had a 2 month cycle and a 3 week cycle. I was tracking my CM and CP, but apparently not very well. [;)]
That looks just like my 12 weeks scan...definitely [DD]!