Actually, not being a smart ass, but that sounds more like a medical problem then gear. Unless that is the only thigh you have injected into.
I met a guy at the VA in the early 70’s had to have his entire leg, PUMPED, out,
It filled up every 2 nd day and then he had to have it physically pumped out.
But you know what? That might not have been water, that might have been blood,
Anyway that was over 30 years ago, and they had a solution, should be better now. Should be, just don’t go to the VA.