I don't know when you had your last little one, but in the last year or two, things have changed pretty drastically.
I had to have several (twice a week for many weeks) with our last (toddler now), and my husband and I had to discuss the known (and potentially unknown but suspected) risks with our doctor.
My last pregnancy was extraordinarily high risk to the baby and to me, and in the end, we did the ultrasounds, since they gave the doctors the best idea of how to proceed and to monitor the situation.
In keeping with the AMA's recent position on the subject, my OB-Gyn will not allow them to be video taped for the family, and only immediate family can be present. She will not do them for gender identification, either. If she discovers the gender, she'll tell you if you want to know, but she won't do it for that reason alone. This is all different than my previous pregnancies.
According to the American Institute of Ultrasound in Medicine (^):
Although the general use of ultrasound for medical diagnosis is considered safe, ultrasound energy has the potential to produce biological effects. Ultrasound bioeffects may result from scanning for a prolonged period, inappropriate use of color or pulsed Doppler ultrasound without a medical indication, or excessive thermal or mechanical index settings. The AIUM encourages patients to make sure that practitioners using ultrasound have received specific training in fetal imaging to ensure the best possible results.
These people do ultrasound for a living, and even they are clear in warning of the potential risk.
For the record, I'm still here, just a bit worse for wear, and so is our littlest one, who turned out just fine, so I think we made the right decision.
Our youngest is not yet a year old. We only had one ultrasound with him. There was no need for more. With #9, we had one at 11 weeks. (that was the one when the ob did a 3D imaging thing for us.) I’ve never taken anyone other that my husband for an ultrasound, and I think that was only 2 or 3 times out of I don’t know how many. Also, with #9 we had one at 5 months and then a few weeks later because I had had an accident of sorts. We moved in the mean time, and I had another one at our new location. I was not given any warning by any of the physicians who performed these. (3 obs and 1 tech) That was 2006.
BTW, glad you and your little one are doing well!