Hello there @Nay64
I'm so sorry you are having this problem.
Whilst mine hasn't come through (I have a power port also) and it's been in coming up 12 months" mine is "very obvious" and I have "skin errosion" over the port and the team keep a very close eye on it. in my case you can clearly see the 'whole port sitting on my chest muscle", the three guiding nodules sit well up and the access mesh is totally clear.
The port has remained unsettled and problematic during it's tenure - not unbearable but i always "know it's there"/ I'm also completely careful about not wearing anything on that side, not bumping it, not wearing necklaces etc to help "nurse it along" as per surgeon and teams instructions. I've also had it dressed/padded on and off to help protect it.
The team also told me it's because I am "very lean" and to put a few kilo's on if possible to help get some fat over it and between it and my skin (and they did this with a smile in their voice and they acknowledge it's not working out for me - wish that one was - but no matter how much I eat I haven't got even close to the 5kg they recommended - I've got about 2.5kg - yes I know "lucky me" hmmmm).
Anyway - get it checked as you are - and let me know how you go! I'll be interested