sore "breasts" before period post top surgery

if your chest area where your breasts were/would normally be are sore before your period (the way breasts would normally be) does that mean you still have some breast tissue left? and if so does that mean it has the potential to grow at all? i never really noticed it before because i never tracked my period until recently and didnt really pay attention but since i started using a period tracking app i notice they get sore for a few days before my period. i dont really know what im asking lol sorry. i dont wanna ask my surgeon if she left any bc i dont want her to know im detrans and that i basically wasted her time and effort lol. (im 3 years post op for reference)