The gyno was really nice. First he looked at all the information that the midwife told me to hand over to him. Then he checked my belly, Jr's position and heartbeat and he scheduled an ultrasound for me right away. The ultrasound was nice, we got to see Jr again and everything is still looking great. Jr is about 2200 grams (4 pounds and 13 oz) now, so right on schedule. The lady who made the ultrasound measured the distance of the placenta to the "exit" and got the information right away back to the gyno. So fast service.
The gyno told us the placenta is 35 mm away from the exit. Anything below 20 mm would have been a problem and thus a C. Section. Now I am out of the danger zone and I get to deliver naturally. I even got reassigned back to the midwife.
It was a little bit of a hassle and sometimes hard b/c of the minimal communication between the different parties involved, but everything is clear now and Sean and I are really relieved and happy now that we know what is going on.
The pictures below show the different situations of placenta localization. The picture on the left shows what was going on at 20 weeks (when the exit was still slightly covered), now we are closest to the picture on the right, but the placenta is even higher than in the picture.