Hi Jason, And yes after a while you will hardly notice it. The only reason I would even know it was there, was it would get itchy once in a while and i would just move it around and it stopped. The other way was like the seat belt my irritate it once in a while and they actually make pads that go onto the seat belt to help cushion the area if it passed over the pacemaker site. mine was actually kind of large and so it could be seen and felt under the skin. Mine had a difibulator so the battery was larger.
at 4 weeks for me I was still at the stage where I could not raise my arms over my head. So things like reaching were done from a stool so i could still get things higher than my shoulders. Are you still at that stage? The only other think that I had to watch for was I was an electronic technician and like to work on my own cars plus things like generators and mechanical equipment so i would try to avoid having things touch that area as bruising of the skin was easier over the pacemaker. But honestly the benefits way outweighed the issues. A few months from now I would say it would not be noticeable at all.