Congrats!!! The first appointment is SO exciting! The transvaginal ultrasound is no biggie at all. You don't even really feel it as it hardly penetrates very far in order to get a good view into the uterus. I had never even considered the possibility of twins, so when the doctor confirmed the yolk sac and the embryo were in the correct place and then specified there was only one, I was a little shocked. Of course there's only one!
My doctor did a quick pap smear to test for any and all possible STDs and then a blood test (two vials or so) to test everything else - blood type, HIV, varicella (chicken pox) immunity, toxoplasmosis immunity, etc etc etc!
I didn't have my husband go along with me because I figured it was so early there wouldn't be much to see...but I was wrong. I suggest your take yours along with you. I couldn't help but crying when I saw the little blob with a tiny heart fluttering away on the sonogram screen!
So for the next appointment after that, I took my husband and it was right around 12 weeks. That was INCREDIBLE! The ultrasound was so phenomenally beautiful. By that point the baby had legs and arms and was dancing and flipping and kicking and having a great time. It was the BEST moment for both of us!
Another thing I recommend is the book "Your Pregnancy Week-by-Week" from DK. You can buy it with free delivery from the Book Depository
here. It has tons of full color photographs and life size diagrams for the weeks of pregnancy. I am in my seventh month and I have loved having that book!!!
Congrats again and enjoy! It's amazing how quickly time flies when you're expecting! xo