Too big? My tummy at 20 weeks 4 days (twins)

Hi everyone! I try to get on here everyday to see what I can learn from everyone else. This is my first pregnancy so everything is very new to me. I'm living in Japan right now and so I feel like my experience is unlike what I keep reading about. Things are done differently here!

I usually go to a clinic to see a doctor every 2 or 3 weeks and I have been able to see my babies every time since my 5th week of pregnancy. Although at that time I only saw ONE! I was very surprised to see there were actually TWO at my 9 week visit. I don't know the difference between the words "sonogram", "ultrasound" and "echo"???? My first visits to the clinic here were always done with a camera that went inside me. It started to change around 15 weeks. Now, thankfully, they use the gel & probe on my stomach. *smile* They give me pictures of the babies every time I go and they even surprised me with the color picture below.

Nothing has been like what I have read in books. I wasn't told to take any multi vitamins or folic acid. Maybe this is because Japanese people have a healthy diet in the first place?? Nonetheless, I have been taking iron, folic acid and vitamins. I would like to have these babies in the States where I will be more comfortable so I will fly home in a month!!!! My husband is Japanese and will stay in Japan for the next few months until they're ready to come out!

I hardly ever meet other American women married to Japanese men here in Japan. (It's usually the other way around.) Is there anyone else out there like me who is living in a foreign country (possibly to a foreigner) and pregnant?

These are our twins at 12 weeks 3 days

Here is one of our twins at 15 weeks 4 days

My husband with his golf club