I had IVF with PGD (to avoid passing on a nasty gene that I knew I had, rather than because of previous losses). The clinic suggested that I have a CVS test to make sure that they had got it right, but I chose not to because the gene wasn't life-threatening, just seriously painful and annoying.

One thing that sticks with me is the counsellor urging me to make sure that whoever did the CVS was someone who had done thousands of them, because then the risk of miscarriage was much lower than what is reported.

I think that in your position I would have the CVS, and make sure that it was done by an absolute expert.