I've been injected "Aquafilling" gel into my breasts and now have slight numb pain in my right arm. What should I do?

The short answer is see your doctor. Aquafilling is made of a polyamide macromolecule. Polyamides occur naturally and artificially. Examples of naturally occurring polyamides are proteins, such as wool and silk. Nylon is an example of a man-made polyamide molecule. It is NOT FDA approved in the USA and I would hesitate to recommend this treatment without seeing large number scientific studies

Please see your doctor as soon as you can for a physical examination, as it sounds like you are suffering from a complication. This technique is not FDA approved and its safety and effectiveness is questionable. Best of luck.

This product is not FDA approved in Canada or America therefore, there is very little advise to offer. You should go see your surgeon or family phycision for further evaluation and advice.

This product is NOT FDA-approved in the U.S., so unfortunately there's little US-based surgeons can tell you about it.  Your best bet is to seek advice from your own physician.