This morning's ultrasound confirmed that I am pregnant. . . . with twins! We were able to see both embryos, their yolk sacs and their heartbeats. Twin A measured 6.6 mm, and Twin B measured 7.0 mm. We were also able to see the small area between the sacs where my spotting has been coming from. The nurse practitioner said it is a normal side effect of the development of the placentas and to expect to see more spotting before it stops entirely.
I am 6 weeks, 5 days pregnant today, and the embryos measured 6w4d and 6w5d respectively. The NP said that measurement by ultrasound is never exact and may be off by as many as 3-4 days at this stage and deemed their measurements "perfect."
So this explains why I have been so nauseated and exhausted--I have much higher hormone levels than I would with a singleton.
I am going to go back every two weeks for the next six weeks to ensure that things continue to progress normally. The NP said today's exam was very good, no indicators of any problems.
MM was thrilled, as are our parents. I am happy and excited and also a little freaked out. ;-)