Hi

i had an infrasound and mammogram 4 weeks ago because I have a few indentations/dimples on my left breast. (I'm 38)

The scans were clear, but the consultant wanted me to come back in 3 months for a follow up. 
 

Anyway, today I noticed an inch long, zig-zag shaped, vertical puckering appear in the same breast, only when arm is by my side and pushed toward the breast, or when muscle tensed a certain way. It's at the 5 o clock position on my left breast. I can't feel a lump. 
 

I'm confused because I've had clear scans so recently, but this symptom is new and scary! 

Would you suggest I wait for my follow up appointment in 8 weeks, or dies this need checked out more urgently? I'm wondering if I can be reassured by my clear scans or if this can still be caused by something that was missed! 
 

please help, I'm very scared!