It sounds like it could just be your internal healing process or a touch of over granulation that can feel a bit like that, email your PC to query it so you can put your mind at rest but in my opinion it would be highly unlikely to be rippling as that is probably the least place you would be likely to feel it at 10 days post op as that is the area that is the most swollen inside so you would be far more likely to feel it at the sides where the skin is thinner and you have no incision swelling
I have rippling all round and the only place i can’t see or feel it is in that area xxx