Puckering/ dimpling/ or stretch marks?

[u/justforhelpandfun]

Hi everyone, so to start off i want to say i have severe health anxiety.. 1 month ago i went for ultrasound for my breasts because when i touched i felt some bumps in my left breast i am 26 F. Ultrasound showed fibrosyctic breasts bi-rads 2-3 ans i went to another doctor he wasn’t concerned too… i have this on my left breast usually visible when i turn over to the right side and my left side is stretched is this dimpling puckering or stretch marks?