Update from today's 16-week appointment: all is as it should be. The baby's heart is beating at about 150 beats per minute; my blood pressure is normal, 114/70 (I think...should have written it down.) My heparin dose is increasing, and next month I'll have an ultrasound. Starting in October (24 weeks) my appointments will be weekly. Until then, high alert for anything that seems possibly, maybe, slightly unexpected or out of the ordinary. They say they won't get tired of hearing from me no matter how many times I call. I hope I won't be putting that to the test.