Can you make it bigger by poking and prodding - absolutely you can. Your repetitive actions can cause inflammation/scar tissue. I am aware I am sounding in the above post like I am losing patience - I will admit that I am somewhat. You have posted here so many times about breast cancer, and still you do nothing to help yourself or follow advice. You must have started at least a dozen threads after BC, maybe more, with the first few Breast-related ones in 2014. That is 5 years, 5 years of consistently returning to obsession over breast lumps - or in this case, lack of them. As someone who has had BC, I have tried to advise and reassure, but still you come back having learnt nothing from the previous HA spiral.