Hi straw66. I have just had my 2nd mc (both at 5/6weeks) and I empathise with you. Its an awful unknown place to be in.
I think where to go next depends on so many things. I have taken heart today from 3 colleagues with different stories - 1 who had 2 boys, 7 mc's then 2 more boys, another who had dc,mc, dc,mc and another who had a dc, 3 mcs (2 early 1 14wks) then 2 more dc no problems.
After speaking to them I am feeling more positive that even a few mcs are not necessarily meaning a major problem - that even more than 1 can be just 'bad luck'.
I do think it helps me that I already have a ds and dd so I know my body can 'do it'. Do you have children already?
What I am trying to say is that it is an awful place to be in right now, do push for the tests if that is right for you, but do have faith that it will happen one day.
Lesley regan's book 'what all women need to know about miscarriage' has been a great help to me this past few days (I need facts to cope!)
You are not alone. Its an awful awful foul place to be.
take care and good luck x