Surgeon checkup

Was today I seen him 3 months ago so it's 6 months since my op and everything is good no lumps which I knew I check every month but one thing that was concerning me was where my scar is it's hard so the doctor told me he thinks it's just tissue or fuild but is sending me for a ultrasound for piece of mind but he said not to worry because he doesn't think it's a lump and when he did the boob feel when laying down he said it doesn't feel like a lump or hard so ultrasound is next Thursday . Tomorrow is my radiologist appointment at royal Brisbane so I'll know when radiation starts. Hope everyone is well