I had my first at 6+1 only because I have had previous mc's and was on clomid so the wanted to make sure there was only one baby also. We were able to see the hb then, but I think most women don't get first u/s until at least 12 weeks, most of my friends have only been given 1 the whole pregnancy at 18 weeks. Depends on your insurance, doctor, and personal situation.