If something feels different and you are concerned, then you need to see your surgeon. Best of luck...
Thank you for sharing your question. As this is a new discomfort I would reach out to your plastic surgeon for an in-person examination to ensure that all is well with your outcome and current result. This may be residual swelling and firmness to your breast tissues which in time will relax and afford a more natural movement and compression to your implant, but other issues such as a capsular contracture should also be ruled out. Your surgeon will be able to afford you the appropriate diagnosis and offer treatment options or reassurance that all is well.
Regarding discomfort or changes which are new it is best that you be seen in person by your Plastic Surgeon.
All the best