If anyone has a go at you for not knowing what you would do - well lets just say they would have to go through me first!

Ultimately though it comes down to what risks you are willing to accept. Before deciding it could be worth asking your OB his personal statistics on miscarriage following these procedures. It may be that he is very experienced and as such the risks of miscarrying could be smaller (I don't know, but I would imagine experience would make the procedure less risky). Ask for a 2nd opinion if you feel you need it. Don't feel pressured because you have time to make this decision just now. I hope you find some peace and make a decision you are happy with.