I Am 9 Weeks Post Op Breast Lift and Aug With Grade 3 CC, Can I Exercise with Weights?

It is hard for me to accept the possibility of a grade 3 capsule at only three weeks after surgery!

In terms of exercise, that question should be asked of your surgeon, particularly if surgery is planned in the near future. 

At nine weeks after surgery, most surgeons would allow return to activity, with some caution of heavy use of the pectoral muscles, because they can cause displacement of the implants. 

All the best. 

Although there are unique differences between people, most are ok to start full or near full workouts at 6 weeks if released by their doctor. This assumes no healing problems from the combined surgery of course. Although you might want to modify your workout if you have some discomfort, typically things are healed well enough that there is very little risk of your workout routine damaging anything or compromising your final result after 6 weeks. It will not have any effect on your CC, best of luck with that. Early after the onset of CC I always offer Singulair which may help some avoid surgery. That is an "off label" use of a drug (not FDA cleared for CC) and should be discussed between doctor and patient.