Hard to answer this without knowing what you mean. Why do you suspect that you may have lost circulation?
Circulation to the skin is diminished in any lifting operation, although less in the arm than in any other lift because little or none of the remaining skin has been elevated off its blood supply, unlike a tummy tuck,, breast lift or face lift.
The circulation to the arm proper should not be affected unless the skin closure was so tight as to compress the arteries or veins. Had that happened, you would have had serious symptoms way before 9 weeks.
Thanks for your question, best wishes.