Hey there Fighter,
Firstly, it depends on the placement of your port to how it is going to effect you.
I have my port sitting on the left hand side of my chest wall. I don't notice it often, though do sometimes if I'm feeling tired and lift my arm. Only when tired though. I'm not into excercise of any sort really though. Because of where it is, means I have to avoid rollercoasters with straps that go over my port (the best ones!) and also I find it a bit uncomfortable if I'm wearing a seatbelt and the driver has to break suddenly.
Unfortunately I think it's a personal thing how much you can do with a port, as some people have no problems and can train and do everything. Others find it more uncomfortable because they can feel it tugging when they stretch to far.
Hope this helps a bit
All the best