Baby appointment -23 weeks

I had another appointment to check on the baby's progress today.  I thought it would be a quick one so I just brought Carson with me rather than have him go to Grandma's.  I thought it would be a quick weigh-in, heart rate check and off we go.  Well, we got a little more than we bargained for.  First when the doctor came in, I got a nice lecture on the weight I had gained.  Sorry, but it is not like I am eating quarter pounders and ice cream every day.  I am eating more fruits and veggies with this one and I am a lot more active too.  So, yes the gain of 6 pounds in 4 weeks surprised me too, but I can't really think of any major changes I will make to make sure it doesn't happen again.  So that started everything off just great! 
Then when she checked the baby's heart rate, at first she couldn't catch up (he likes to move on her!) and then when she did get it, it sounded irregular.  So then we had to go get an ultrasound to check on the baby and make sure he was ok.  Of course, they were busy at that time so we got to wait a lovely 20-30 minutes for that room to open up.  Then, once we got in the ultrasound room, the ultrasound tech was not available so my doctor had to come back to do the ultrasound.  Once she got the machine going, the baby was moving all around and seemed to be fine.  She checked the heart rate a couple of different times and it seemed ok.  Honestly, I wasn't too worried about his heart having any issues.  This baby has been so active since very early on, all 4 chambers of his heart must be working just fine.
But just to be extra sure, she referred us to the Maternal Fetal Medicine department where we will get a 3D or 4D ultrasound and a study will be done on the baby's heart.  Again, I am not worried about it, but it just kind of sits in the back of your mind, what if?  So hopefully everything is ok and we still have a nice and healthy baby.  But if we don't and he needs special attention or surgery, we will deal with it then.  Until I am told otherwise, I have a healthy, overly active, growing baby boy!